Cannabis Growing | Hydroponic Grow Checklist

• Space: A closet, tent, or spare room - ideally 2x2 ft or larger
• Power Access: At least one dedicated outlet (more if using multiple devices)
• Ventilation: You'll need airflow in and out - either passive or powered
• Lightproofing: Prevent light leaks during dark cycles (especially during flowering)

➔ Hydro Note:
Make sure your grow space can handle the footprint of a hydroponic system — especially if you're using a recirculating setup like DWC or RDWC. Leave room for reservoirs, tubing, and access for cleaning or refilling.

➔ Hydro Tip:
Hydro grows often require multiple powered components — like air pumps, water pumps, chillers, and circulation fans. Plan for extra outlets or a power strip with surge protection.

➔ Hydro-Specific Prep:
Floors should be waterproof and easy to clean. Consider adding a floor tray or spill guard under your hydro system to catch leaks or overflows.

☑ Extension cords and power strips (surge-protected)
☑ Thermometer/hygrometer combo
☑ Oscillating fan for air circulation
☑ Duct fan and carbon filter (if not using a sealed tent)
☑ Reflective material like Mylar (if not using a tent)

Estimated Budget: $75–$200 depending on room size and components used

Pick a tent size based on how many plants you want to grow and how much space you have.

• 2x2 ft: 1–2 small plants — fits in closets or corners
• 3x3 ft: 2–4 plants — ideal for most hobby growers
• 4x4 ft or larger: 4+ plants — needs more space and airflow

Look for tents with:

• Sturdy frame and poles
• Mylar or reflective interior
• Multiple ports for power cords and ducting
• Heavy-duty zippers and viewing window (optional)

➔ Hydro Consideration:
Choose a tent size that provides enough room for both your plants and your hydroponic system — especially if you're using a larger setup like RDWC or Ebb & Flow. Make sure there's space to access the reservoir for refills, cleaning, and monitoring.

➔ Humidity Reminder:
Hydroponics naturally increases humidity levels due to exposed water and transpiration. Proper airflow and dehumidification are especially important in enclosed tents to prevent mold or root issues.

➔ System Access:
Look for tents with extra side doors or ports — they make it easier to run tubing, manage air lines, or access your reservoir without disturbing the plants.

☑ Grow tent (choose your size)
☑ Duct ports for fan/filter setup
☑ Lightproof zippers
☑ Reflective interior (Mylar lining)
☑ Optional: Waterproof floor tray and viewing window

Estimated Budget:  $80–$250+ depending on size and quality

Your light is your plant’s sun — it controls how fast your plants grow, how healthy they are, and how much they yield. The right light setup is one of the most important decisions in your grow.

Choosing the right type, wattage, and coverage will depend on your space, budget, and grow goals.

• LED: Energy-efficient, low heat, beginner-friendly
• CMH: Great spectrum, more heat, higher power draw
• HPS: Mostly used for flowering — high output, high heat
• Fluorescent: Best for clones and seedlings

➔ Hydro Growth Note:
Hydroponic plants often grow more rapidly than soil-grown ones, especially during veg. You may need stronger lighting to match their accelerated growth — or raise your lights sooner to prevent stretching.

➔ Reflection Tip:
Exposed water surfaces (like in DWC or RDWC) can reflect extra light onto your plants. Watch for signs of light stress or bleaching, especially during early growth. Adjust hanging height if needed.

➔ Same Schedule, Faster Results:
Light schedules stay the same in hydro — but don’t be surprised if you hit growth milestones faster than expected. Keep your eyes on plant height and adjust your light plan accordingly.

☑ Full-spectrum LED or CMH grow light
☑ Adjustable hangers or ratchet ropes
☑ Light timer (24-hour programmable)
☑ Optional: Light meter or PAR meter
☑ Proper mounting height based on light type

Estimated Budget: $100–$400+ (depending on light type and tent size)

Plants need different amounts of light depending on their growth stage. Getting the schedule right helps your plants grow faster, stay healthy, and flower at the right time.

A simple timer can automate your lights so you don’t have to think about it every day.

• Seedling/Clone: 18–24 hours of light
• Vegetative Stage: 18 hours light / 6 hours dark
• Flowering Stage: 12 hours light / 12 hours dark (strict!)

Keep your schedule consistent - light leaks or missed cycles during flowering can cause stress or reduce yield.

➔ Hydro Note:
Hydroponic plants often grow faster in veg, so you might reach your desired plant size sooner than expected. Be prepared to flip to flowering a bit earlier than with soil-grown plants.

➔ Why Timers Matter Even More in Hydro:
In hydro, consistent light cycles are crucial to prevent stress or nutrient-related issues. Use a reliable digital timer so your light schedule stays locked in — especially important if your plants are growing rapidly.

☑ 24-hour plug-in or digital timer
☑ Set daily on/off cycle (same time every day)
☑ Place timer between outlet and your grow light
☑ Avoid light leaks during dark cycles
☑ Optional: Dual-timer setup for multi-light grows

Estimated Budget: $15–$50

Temperature, humidity, and airflow are just as important as light and nutrients. A stable environment helps your plants thrive — and prevents problems like mold, pests, and stunted growth.

Dialing in your climate is the key to happy, high-yield plants.

• Seedling Stage

  • Temperature: 70–75°F (21–24°C)
  • Humidity: 65–70% RH
  
  

• Vegetative Stage

  • Temperature: 72–82°F (22–28°C)
  • Humidity: 50–70% RH
  
  

• Flowering Stage

  • Temperature: 65–80°F (18–26°C)
  • Humidity: 40–50% RH
  
  

Use tools like exhaust fans, clip-on fans, humidifiers, or dehumidifiers to stay in the right zone.

➔ Hydro Humidity Warning:
Exposed water surfaces and fast-growing hydro plants can quickly raise humidity in your grow space — especially during early veg. Aim to keep RH between 55–70% in veg and 40–50% in flower. Use a strong exhaust system and a dehumidifier if needed.

➔ Extra Airflow Helps Hydro:
Good air circulation not only strengthens plants but also helps manage the extra moisture from your hydro system. Use oscillating fans to keep air moving above and around the canopy and reservoir.

➔ Watch Water Temps!
Unlike soil, hydroponic root zones are fully submerged — meaning water temperature matters a lot. Keep your reservoir between 65–70°F (18–21°C) to prevent root rot and keep oxygen levels high. You may need a water chiller or aquarium heater depending on your grow room.

Pro Tip:
Monitor both air temp and water temp — they don’t always match. A cool room doesn’t guarantee safe root temps!

☑ Oscillating fan for airflow
☑ Exhaust fan for heat/humidity control
☑ Optional: Humidifier (veg) or dehumidifier (flower)
☑ Check daily - consistency > perfection

Estimated Budget: $50–$200+

Not all hydro systems work the same -- some are simple and passive, others are fast and powerful. Choosing the right one for your space and experience level makes your grow smoother, cleaner, and way more fun.

Roots hang directly in a bucket of nutrient-rich, oxygenated water
✓ Simple setup
✓ Fast growth
✗ Sensitive to water temps and cleanliness

Best for: Beginners with 1–4 plants
Setup Cost: $
Maintenance: Medium
Requires: Air pump, air stone, bucket, net pot

Nutrient solution is delivered to the plant from above and drains back to the reservoir
✓ Easy to build or automate
✓ Fewer root zone issues
✗ Can clog if not maintained

Best for: Small grow tents or DIY builders
Setup Cost: $
Maintenance: Low to medium
Requires: Pump, tubing, timer (optional), reservoir, grow tray

Multiple DWC pots connected to a central reservoir with circulating water
✓ Extremely fast growth
✓ Centralized control
✗ Requires plumbing and more frequent cleaning

Best for: Intermediate to advanced growers
Setup Cost: $$
Maintenance: High
Requires: Multiple buckets, tubing, water pump, air system

A tray is periodically flooded with nutrient solution, then drained
✓ Great oxygenation
✓ Works well with timers
✗ Needs precise setup to avoid overflows

Best for: Mid-sized grows on tables or trays
Setup Cost: $
Maintenance: Medium
Requires: Grow tray, reservoir, pump, timer, overflow system

• Start with DWC or Top-Feed for simplicity and easy troubleshooting
• Keep it small: 1 to 4 plants is ideal for a first grow
• Make sure your reservoir is easy to access for daily checks
• Use light-blocking containers or covers to prevent algae
• Always include strong air circulation in your water

☑ Net pots and hydroton or rockwool
☑ Air pump and air stone
☑ Water pump (for RDWC or top-feed)
☑ Tubing and timer (optional)
☑ Light-blocking lid or cover
☑ pH meter and EC/PPM meter
☑ Backup bucket or drain system

In hydroponics, grow media replaces soil. It anchors the roots and helps manage moisture, oxygen, and nutrient delivery. Your choice of media affects watering frequency, oxygenation, root health, and overall plant growth.

• Drainage - How fast water flows through
• Air Retention - How much oxygen stays near the roots
• Water Holding - How long it retains moisture
• pH Stability - Whether it affects nutrient uptake
• Reusable - Can it be cleaned and used again?

• Excellent drainage and airflow
• Inert and pH-stable
• Reusable if cleaned
• Best for: DWC, flood & drain, top-feed

• Great water retention
• Comes in cubes, slabs, and plugs
• Must be pH-adjusted before use
• Best for: Seedlings, clones, top-feed, drain-to-waste

• Holds water well but drains easily
• Naturally pH-neutral
• Often blended with perlite
• Best for: Top-feed, drip systems

• Super lightweight and airy
• Doesn’t retain much water
• Often mixed with coco or vermiculite
• Best for: Mixing with other media, high-oxygen root zones

• High water retention
• Slower drainage than perlite
• Often blended for seed starting
• Best for: Seedlings, coco mixes

• Use clay pebbles for most hydro setups (DWC, top-feed, ebb & flow)
• Use rockwool cubes to start seeds or clones
• Try coco with 30% perlite for a forgiving, soil-like feel
• Always rinse media before use to remove dust
• Pre-soak rockwool in pH 5.5–6.0 for best results

In hydroponics, water is everything -- it’s your root zone, your nutrient carrier, and your oxygen delivery system. Keeping it clean, balanced, and consistent is key to healthy, fast-growing plants.

• No “watering” like in soil -- roots live full-time in water
• You’re managing a reservoir: a container filled with nutrient-rich, pH-balanced water
• Water must be oxygenated (air pump + air stones)
• Nutrients are mixed directly into the res -- and refreshed regularly
• Plants drink constantly, so monitoring water levels and chemistry is essential

• Top Off Daily: Add clean water to replace what your plants drink
• Full Reservoir Change: Every 7–14 days, dump and remix your nutrient solution
• Keep It Cool: Ideal water temp = 65–70°F (18–21°C)
• Check Daily: pH and EC/PPM can drift — test and adjust as needed
• Keep It Clean: Use hydrogen peroxide or a system cleaner weekly to avoid algae and biofilm
• Add Air: Use a strong air pump and at least one air stone per plant site

✗ Letting water get too warm (root rot risk)
✗ Forgetting to top off (can spike EC and nutrients)
✗ Using unfiltered tap water (can contain chlorine, chloramine, or minerals)
✗ Skipping reservoir changes (buildup = problems)
✗ Not measuring pH/EC daily (hydro is fast, but unforgiving)

☑ Submersible water pump (for draining or mixing)
☑ Air pump + tubing
☑ Air stones (at least 1 per site)
☑ pH meter or drops
☑ EC/PPM meter
☑ pH up/down adjusters
☑ Clean water source (filtered or RO preferred)
☑ System cleaner (H₂O₂, enzymes, or hydro-safe product)
☑ Thermometer or water temp monitor

Estimated Budget: $75–$200+
(Depends on system size, air pump quality, and filtration setup.)

In hydroponics, your water is your soil -- so nutrients must be mixed directly into the reservoir with care. Feeding correctly can make the difference between explosive growth and major root problems.

• Use a hydro-friendly nutrient line -- avoid organic blends (they can clog and cause biofilm)
• Mix nutrients directly into your reservoir water, following the bottle’s sequence
• Feed constantly -- your plants take up nutrients 24/7 in hydro
• Always measure and adjust pH (5.5–6.5) and EC/PPM before feeding
• Watch for signs of overfeeding (burned tips) or deficiencies (yellowing leaves)
• Keep your reservoir clean and change the water every 7-14 days

• Base Nutrients: N-P-K bottles for veg & bloom
• Supplements: Cal-mag (essential), silica, bloom boosters, enzyme formulas
• Synthetic Only: Hydro works best with clean synthetic nutrients (no organic particles)
• No Soil or Coco: All feeding is done through water -- no buffering from media

☑ Base nutrients (veg + bloom)
☑ Cal-mag supplement (critical in RO or soft water)
☑ Hydro-friendly measuring tools (syringe, pipette, etc.)
☑ pH meter or drops
☑ EC/PPM meter (required in hydro)
☑ pH up/down adjusters
☑ Reservoir-safe mixing container or water pump

Estimated Budget: $60–$180+
(Hydro requires more precise tools than soil or coco.)

In hydro, your plants are constantly drinking from the same nutrient mix -- so accuracy and timing matter. A solid nutrient schedule helps maintain balance, growth, and clean water throughout your grow.

• Prevents nutrient lockout or toxic buildup
• Helps you track how much to add when topping off reservoir
• Makes transitions between veg & flower smoother
• Keeps your water chemistry stable and predictable
• Essential for automated or recirculating systems

• Stage breakdowns: seedling, early veg, late veg, early/mid/late flower
• Dosage chart: mL per gallon (or tsp per liter)
• Top-off guidance: how to adjust water/nutrients between full changes
• EC/PPM targets for each stage
• Supplement timing: cal-mag, enzymes, silica, boosters, etc.
• Flush timing: when to switch to plain water before harvest

☑ Feeding chart or schedule (hydro-specific)
☑ Measuring tools: syringe, pipette, or spoon
☑ pH and EC meters (required for hydro)
☑ Clean water source (RO or filtered preferred)
☑ Notebook or app to track feedings & reservoir changes

Estimated Budget: $50–$150+
(Accurate meters and better-quality nutrients drive the cost a bit higher.)

Whether you're sprouting seeds or taking clones, strong roots are the foundation of a successful grow. The early days are delicate — your goal is to create a warm, humid, and stable environment that encourages healthy root development.

This section covers the tools and techniques to kickstart your grow the right way.

• Seeds germinate best in warm, moist (not soaked) conditions
• Use a humidity dome or plastic cover to retain moisture
• Clones need high humidity and low light while rooting
• Dip cuttings in rooting hormone or gel before planting
• Keep temps around 72–78°F (22–26°C) for fast rooting
• Don't overwater — roots need oxygen too

• Seeding: Paper towel method, root plugs, or direct sow
• Cloning: Cut from healthy mother, dip in gel, place in plug or aeroponic cloner
• Rooting: Maintain high humidity, mist daily, and wait 7–14 days for roots

☑ Starter tray or dome
☑ Root plugs or seed starter cubes
☑ Heating mat (optional but helpful)
☑ Rooting gel or powder
☑ Spray bottle
☑ Low-intensity grow light or CFL

Estimated Budget: $25–$80

From plant ties to trimmers, the right garden tools can save you time, improve plant health, and keep your grow clean and efficient. These aren’t fancy gadgets -- they’re the everyday essentials that make growing smoother from seed to harvest.

• Trimming scissors: For pruning, shaping, and harvesting
• Trellis netting / plant ties: To support and train plants
• Spray bottles or pump sprayers: For foliar feeding or pest control
• Gloves: For clean handling during pruning or harvest
• Measuring tools: For nutrients, pH adjusters, and foliar sprays
• Cleaning brushes / wipes: Keep your tools and tent clean

Growing in hydroponics requires some extra gear to keep things running smoothly:

• Reservoir scrub brush (for cleaning tanks)
• Tubing brushes or pipe cleaners
• Syringes or pipettes (for measuring liquid nutrients/pH adjusters)
• Extra air stones & airline tubing
• Hydrogen peroxide or food-safe cleaners (for sanitation)
• Water pump (for draining/refilling your reservoir)

• Clean tools regularly with alcohol or diluted bleach
• Wipe down grow tent surfaces every 1–2 weeks
• Keep your trimmers sharp and sanitized
• Replace worn-out stakes, ties, or nets before the next cycle
• Organize your gear so it’s easy to access when you need it

➔Hydro Cleaning Routine:
Clean and sanitize your entire hydro system every 1–2 weeks, or every time you do a full reservoir change. Flush out lines and scrub all surfaces that contact water to prevent algae, bacteria, and root rot.

Pro Tip:
Label your hoses, buckets, and measuring tools — hydro systems can get messy fast if you don’t stay organized.

☑ Trimming scissors or shears
☑ Spray bottle or pump sprayer
☑ Garden gloves
☑ Plant ties or trellis netting
☑ Cleaning wipes or isopropyl alcohol
☑ Small bin or drawer for tool storage

+ Hydroponic-Specific Tools
☑ Reservoir scrub brush
☑ Tubing brushes or pipe cleaners
☑ Syringes or pipettes (for precise nutrient/pH dosing)
☑ Extra airline tubing & air stones
☑ Hydrogen peroxide or food-safe cleaning solution
☑ Submersible water pump (for draining/refilling reservoir)

Estimated Budget: $40–$100
(Hydro tools can add $25–$50 depending on quality and automation.)

Training your plants is all about controlling how they grow -- encouraging bushier shapes, better airflow, and more even light exposure. Whether you’re using gentle techniques like LST or more advanced methods like SCROG or super cropping, plant training helps you maximize your space and harvest more from every plant.

• Topping: Cutting the main stem to encourage multiple colas
• FIMing: Similar to topping, but less precise -- may produce 3–4 new tops
• LST (Low Stress Training): Gently bending and tying stems to open the canopy
• Defoliation: Removing fan leaves to improve airflow and light penetration
• SCROG (Screen of Green): Using a trellis net to spread branches horizontally
• Super Cropping (advanced): Crushing stems to control height/stretch

Each technique has its place -- and many growers combine them for best results.

• Topping/FIM: When plants have 4–6 nodes (early veg)
• LST: Start in early veg and continue through stretch
• Defoliation: Light pruning throughout veg; heavier right before flower
• SCROG: Start weaving branches during late veg
• Super Cropping: During early flower to control height/stretch

Hydro Growth Speeds Things Up:
In hydro, plants grow faster and bushier — which means you may need to start training earlier than in soil. Keep a close eye on growth so your canopy doesn’t get out of control.

SCROG + Hydro = Great Match:
Screen of Green works especially well in hydro systems like DWC or RDWC, where plants stay in a fixed position. Just make sure your screen setup still allows access to the reservoir for maintenance.

Hydro Recovery Time:
Hydro plants bounce back from stress faster thanks to constant nutrient and oxygen delivery. That means you can usually top, FIM, or defoliate a bit more aggressively — but always watch how your specific strain responds.

☑ Soft plant ties or coated wire
☑ Garden stakes or clips
☑ Trellis netting (for SCROG)
☑ Gloves (optional)
☑ Training clips or LST anchors (optional but helpful)

Estimated Budget: $10–$50

A healthy grow starts with prevention. Pests and diseases like spider mites, fungus gnats, powdery mildew, and root rot can sneak in fast -- and ruin a crop if not handled early. This module gives you the tools and strategies to keep your plants healthy, resilient, and productive.

• Spider Mites: Tiny bugs that leave webs and speckled leaves
• Fungus Gnats: Small flies that lay eggs in wet soil
• Aphids & Thrips: Sap-sucking bugs that weaken plants
• Powdery Mildew: White, powdery fungus on leaves
• Root Rot: Caused by overwatering and poor drainage
• Bud Mold: Dense buds + poor airflow = disaster

• Keep humidity and airflow in check -- especially during flower
• Use sticky traps to monitor flying pests
• Water only when needed; avoid soggy soil
• Quarantine new clones or plants before introducing them
• Clean tools, pots, and tents regularly
• Use neem oil or insecticidal soap as a preventive spray
• Add beneficial bugs for organic pest control (e.g. ladybugs, predatory mites)

☑ Neem oil or insecticidal spray
☑ Soil drench for fungus gnats (e.g. mosquito bits)
☑ Beneficial microbes (e.g. Bacillus subtilis)
☑ Clean gloves and scissors
☑ Disinfectant for tools and tent surfaces

Estimated Budget: $20–$60

Hydroponic systems grow fast -- but that means problems show up fast too. Yellowing leaves, curling tips, brown spots, or slow growth can quickly spiral. The good news? Most hydro issues have clear signs and quick fixes.

• Yellowing leaves: pH too high or low, or nitrogen deficiency
• Purple stems or leaves: Magnesium deficiency, cold water temps, or stress
• Dark green, clawed leaves: Too much nitrogen or EC too high

• Brown spots: Calcium or magnesium deficiency (often from pH drift)
• Curling tips (“burn”): EC too high, nutrient overdose
• Drooping leaves: Rare in hydro — usually root issues or oxygen levels

• Slimy or mushy roots: Root rot from warm water, poor oxygen, or dirty res
• Algae or biofilm: Light leaks or poor cleaning
• Sudden pH/EC swings: Top-off imbalance or nutrient buildup

• Slow growth: Poor oxygenation, low EC, or pH lockout
• Stunted plants: Genetics, root damage, or light issues
• Thin, weak stems: Lack of airflow or low light

• Check your pH & EC daily -- most problems start with water chemistry
• Clean your reservoir every 7-14 days to prevent root pathogens
• Flush with clean, pH'd water if you suspect nutrient lockout
• Cool your water to 65-70°F (18-21°C) to avoid root rot
• Boost oxygen with air pumps and stones
• Use a grow journal or app to spot patterns sooner

☑ Digital EC/PPM meter (required in hydro)
☑ Cal-Mag supplement
☑ Clean water source (RO or filtered)
☑ Reservoir cleaner (hydrogen peroxide or enzyme product)
☑ Grow journal or tracking app
☑ Troubleshooting chart or visual guide

Estimated Budget: $35–$90+

You’ve grown your plants from seed to flower — now it’s time to dry, trim, and cure them for maximum flavor, potency, and shelf life. Harvest is more than just chopping plants — it’s a process that requires patience, precision, and the right tools.

This step can make or break your final product.

• Harvest when trichomes are milky/cloudy with some amber
• Trim leaves before or after drying (wet vs dry trim)
• Hang in a dark room at 60°F / 60% humidity for 7–14 days
• Use hygrometers in jars to monitor curing RH (ideal: 58–62%)
• Burp jars daily during the first 1–2 weeks of curing
• Cure for at least 3–4 weeks for best results

• Wet Trim: Trim before drying for faster dry time
• Dry Trim: Hang whole plant and trim after drying
• Curing: Store buds in airtight jars, monitor RH
• Long-Term Storage: Use glass jars, CVaults, or vacuum-sealing

☑ Drying rack or clothesline setup
☑ Hygrometers (mini for jars)
☑ Glass jars or airtight containers
☑ Burp lids or humidity packs (optional but helpful)
☑ Clean gloves and scissors

Estimated Budget: $40–$150

Once your flower is properly dried and cured, it’s time to process it — whether that means trimming for presentation, extracting for concentrates, or prepping for long-term storage. Great results require clean tools, the right accessories, and an understanding of key techniques.

This section gives you what you need to take your flower further.

• Final Trim: Clean up buds for appearance and storage
• Sifting: Use screens or trim bins to collect kief
• Pressing: Use a rosin press to extract solventless concentrates
• Infusing: Prep flower for edibles, oils, or tinctures
• Storage: Use airtight containers to preserve aroma and freshness

• Use a trim tray to collect kief while you work
• Keep scissors clean with alcohol wipes or resin remover
• Use food-safe gloves when handling processed bud
• Sift gently to avoid contaminating kief
• Store trimmed flower in cool, dark, airtight containers

☑ Fine mesh screen or kief sifter
☑ Rosin press or pollen press (optional)
☑ Food-grade gloves
☑ Airtight jars or storage containers
☑ Alcohol or resin cleaner for tools

Estimated Budget: $40–$300+