DWC, RDWC, Ebb & Flow, NFT, Drip, Aeroponics, Kratky, AutoPot, Wicking & Coco compared side-by-side. Which system is right for you? Find out with our interactive quiz, budget builds, and expert recommendations for Toledo products.
The simplest true hydroponic system - roots suspended in oxygenated nutrient solution
Bucket โ Nutrient Solution โ Air Stone โ Oxygen Bubbles โ Suspended Roots
A plant sits in a net pot lid suspended over a bucket filled with nutrient solution. An air pump drives air through an air stone at the bottom of the bucket, creating oxygen-rich bubbles that rise through the solution. The plant's roots hang directly in this oxygenated nutrient solution, absorbing nutrients and oxygen 24/7. As the plant grows, roots can fill the entire bucket. Simple, effective, and fast-growing - this is hydroponics at its purest.
Connected DWC buckets sharing a central reservoir - uniformity at scale
Multiple Grow Sites โ Connected by Pipes โ Central Reservoir โ Water Pump โ Circulates Back
RDWC takes DWC and connects multiple buckets together with piping to a central reservoir. A water pump constantly circulates nutrient solution from the reservoir through all buckets and back. This creates a unified system where all plants share the same water, nutrients, pH, and EC. Air stones in each bucket (or in the reservoir) oxygenate the solution. The constant circulation keeps nutrients mixed, temperatures even, and oxygen levels high. You manage one large reservoir instead of multiple buckets - making commercial-scale growing much easier.
Periodic flooding of grow tray, then draining back to reservoir - classic reliability
Pump ON: Tray Floods โ Timer: Wait โ Pump OFF: Gravity Drains โ Repeat 3-6x/day
Plants sit in pots filled with growing media (hydroton, perlite, coco) on a flood tray. A timer-controlled pump periodically floods the tray with nutrient solution from a reservoir below. Solution rises to just below pot rims (typically 2-3" deep), saturating the media and roots. After 10-30 minutes, the pump shuts off and gravity drains all solution back to the reservoir through the same tube. This cycle repeats 3-6 times per day (more in late flower). The drain provides oxygen to roots; the flood provides fresh nutrients. Simple, reliable, and forgiving.
Continuous thin film of nutrients flowing over roots - maximum oxygenation
Reservoir โ Pump โ Elevated Channel โ Thin Film Flows โ Gravity Return โ Loop
NFT uses sloped channels (gutters or tubes) with plants in net pots along the top. A pump continuously sends nutrient solution to the high end of each channel. Solution flows down the channel as a thin film (2-3mm deep), passing over the root mass hanging inside the channel. Roots absorb nutrients from the film while exposed to air above for oxygen. The film drains by gravity back to the reservoir at the low end, where it's pumped back up. The constant flow keeps nutrients fresh and oxygenated - one of the most oxygen-rich systems possible.
Emitters drip nutrients to each plant - precision, scalability, commercial standard
Reservoir โ Pump โ Mainline โ Drippers โ Media โ Drain to Waste (or Recirculate)
Each plant sits in a pot of growing media (coco, perlite, hydroton, rockwool). A pump sends nutrient solution through tubing to drip emitters positioned at each plant. Emitters slowly drip solution onto the media surface, which wicks down through the media to the roots. Systems can be drain-to-waste (runoff discarded) or recirculating (runoff returns to reservoir). Frequency varies: hand-watering 1-2x/day up to automated high-frequency fertigation (every 1-2 hours in coco). Timers or irrigation controllers automate everything. FloraFlex systems are purpose-built drip systems optimized for this method.
Roots suspended in air, misted with nutrients - ultimate oxygen, ultimate risk
Roots in Air Chamber โ High-Pressure Mist Nozzles โ 1-5 second bursts โ Reservoir Pump Loop
Plants sit in net pots on top of a sealed chamber. Their roots hang freely in the air-filled chamber with no media or standing water. High-pressure pumps (80-120 PSI) or ultrasonic foggers spray a fine mist of nutrient solution directly onto the roots for 1-5 seconds every 2-5 minutes. The mist coats roots with nutrients, then immediately drains back to the reservoir. Between misting cycles, roots are exposed to 100% air for maximum oxygen. This creates the absolute fastest growth rates possible - but with zero margin for error.
Set it and forget it - no pumps, no timers, just plants and nutrients
Plant in Lid โ Roots Hang โ Static Nutrient Solution โ Water Level Drops โ Air Gap Forms
The Kratky Method is the simplest possible hydroponic system: a container of nutrient solution with a plant suspended on top. That's it. No air pump, no water pump, no electricity. The solution level starts just touching the roots. As the plant drinks and transpires, the water level slowly drops, creating an air gap. The upper roots grow into this air gap and breathe oxygen from the air; the lower roots stay submerged and absorb nutrients. The plant regulates its own oxygen and nutrient uptake. When solution runs low, the grow is done (or you refill for longer cycles). Perfect for lettuce, herbs, single harvests.
AQUAvalve technology - no electricity, no timers, plants water themselves
Elevated Reservoir โ Gravity Feed โ AQUAvalve โ Tray Fills โ Valve Closes โ Plant Drinks โ Repeats
AutoPot's patented AQUAvalve is a mechanical float valve that controls water flow without electricity. Each plant sits in a pot inside a tray with an AQUAvalve. A reservoir elevated 6"+ above plants feeds solution by gravity through tubing to each valve. When the tray is dry, the valve opens and fills the tray with 1" of solution. As solution fills, a float rises and mechanically closes the valve. The plant drinks the solution over hours/days. When the tray is nearly empty, the float drops, the valve opens, and the cycle repeats. Completely automatic, passive, silent, and nearly failure-proof.
Passive capillary action draws nutrients up - the original hydroponics
Plant in Media โ Wick Threads โ Pull Solution Up via Capillary Action โ Roots Absorb
A wicking system uses a rope, felt strip, or other absorbent material as a "wick" to draw nutrient solution from a reservoir up into the growing media via capillary action (the same force that makes water climb up a paper towel). One end of the wick sits in the reservoir; the other end threads up through the media to the root zone. Solution slowly wicks up, keeping media moist but not waterlogged. Plants absorb nutrients from the damp media as needed. Simple, ancient, and effective for small plants - but limited by how much solution a wick can transport.
The commercial gold standard - soilless media with hydroponic speed
Reservoir โ Drip/Top-Feed โ Coco Media โ Frequent Watering โ 10-20% Runoff Discarded
Coco coir is technically a soilless medium, but when paired with high-frequency fertigation (watering), it performs like hydroponics. Plants grow in 100% coco or coco/perlite mix in fabric pots. A drip/top-feed system delivers fresh nutrient solution multiple times per day (1-6+ times depending on stage). Each watering saturates the media, then 10-20% runs off the bottom and is discarded (drain-to-waste). This constant flushing prevents salt buildup and keeps fresh oxygen and nutrients at the roots. Coco holds moisture but drains freely, providing the perfect air-to-water ratio. This is the #1 most popular commercial growing method worldwide.
๐ก Pro Tip: For detailed coco fertigation strategies (watering frequency, EC targets, runoff management), see our Irrigation Systems Guide linked below. Coco + high-frequency fertigation is the most forgiving high-performance system - perfect for first-time hydro growers who want commercial results.
All 10 hydroponic systems compared side-by-side
| System | Difficulty | Cost | Yield | Maintenance | Growth Speed | Scalability | Power Usage | Best For |
|---|---|---|---|---|---|---|---|---|
| 1. DWC | โญ Easy | $ Low | 8/10 | Medium | Very Fast | Low | Low | Beginners, single plants |
| 2. RDWC | โญโญโญ Medium | $$$ High | 9/10 | Medium-High | Very Fast | Excellent | Medium | Serious hobbyists, commercial |
| 3. Ebb & Flow | โญโญ Easy-Medium | $$ Medium | 8/10 | Low-Medium | Fast | Good | Low | Beginners to intermediate |
| 4. NFT | โญโญโญโญ Hard | $$ Medium | 9/10 | High | Very Fast | Excellent | Low | Experts, leafy greens, commercial |
| 5. Drip/Top-Feed | โญโญโญ Medium | $$ Medium | 9/10 | Medium | Very Fast | Excellent | Low-Medium | All levels, commercial standard |
| 6. Aeroponics | โญโญโญโญโญ Expert | $$$$ Very High | 10/10 | Very High | Extreme | Low | High | Experts only, cloning, R&D |
| 7. Kratky | โญ Very Easy | $ Very Low | 6/10 | Very Low | Slow-Medium | Very Low | None | Absolute beginners, leafy greens |
| 8. AutoPot | โญโญ Easy-Medium | $$ Medium | 8/10 | Very Low | Medium-Fast | Excellent | None | Hands-off growers, organic grows |
| 9. Wicking | โญ Very Easy | $ Very Low | 5/10 | Very Low | Slow | Very Low | None | Education, kids, herbs |
| 10. Coco DTW | โญโญ Easy-Medium | $$ Medium | 9/10 | Medium | Very Fast | Excellent | Low-Medium | All levels, COMMERCIAL STANDARD |
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Complete shopping lists for the 4 most popular systems
Perfect first hydro system - everything you need
Optional Upgrades: Bluelab pH pen (+$100), chiller for hot climates (+$300)
Commercial-style setup with automation
Pro Upgrade: Swap GH Flora for Athena Pro Line (+$50 for dry nutrients + Core/Bloom)
Set it and forget it - no electricity needed
Why AutoPot? Perfect for organic growers, vacations, or anyone who wants low maintenance with high performance.
Commercial-grade recirculating DWC - maximum yield
Pro Upgrade: Add water chiller (+$300-700) for perfect temperature control year-round
๐ช All products available in-store or call for inventory check
Call Toledo: 419-725-2450Essential knowledge for all hydroponic systems - keep your plants healthy with proper reservoir care
Target Range: 5.5-6.2 for hydro/coco, 6.0-6.8 for soil-based
Why it matters: Wrong pH locks out nutrients even if they're present. Check daily in small reservoirs, every 2-3 days in large systems.
Tools: Bluelab pH pen (most accurate), GH pH Control Kit (budget), pH Up/Down solutions
EC = Electrical Conductivity: Measures total dissolved salts (nutrient concentration)
PPM = Parts Per Million: Another way to express nutrient strength (EC x 500 or 700 depending on scale)
Targets: Seedlings 0.4-0.8 EC | Veg 1.2-1.8 EC | Bloom 1.8-2.4 EC
Tools: Bluelab combo pen, Milwaukee EC meter
Ideal Range: 65-72ยฐF (18-22ยฐC)
Why it matters: Above 72ยฐF = low dissolved oxygen + root rot risk. Below 60ยฐF = slow growth.
Solutions: Water chiller (best), frozen water bottles (budget), beneficial bacteria (Hydroguard) if temps unavoidable
Beneficial Route: Add Hydroguard, SouthernAg GFF, or Recharge. Protects roots, prevents pathogens. Requires warmer temps OK (up to 75ยฐF).
Sterile Route: Add H2O2 (hydrogen peroxide) or pool shock (sodium hypochlorite). Kills everything. Requires perfect temps (65-68ยฐF).
Pick one - never mix both!
Small systems (DWC, 5-gal buckets): Weekly full change recommended
Medium systems (20-50 gal): Every 10-14 days
Large systems (100+ gal): Every 2-3 weeks, top-off between changes
Drain-to-waste: No changes needed - fresh nutrients every watering
ALWAYS FOLLOW THIS ORDER: