Best NFT Hydroponic Systems: 2026 Buying Guide

A square kit made to fill a 1m x 1m tent, over a 70-litre tank that needs topping up less often.

• 2 to 5 plants
• 90 x 90 x 30cm
• 70-litre tank
• No timer needed

• The tray simply rests on the tank: no nuts and bolts
• A Correx top plate keeps light off the roots

Know before you buyThe 90 x 90cm base needs a tent of at least 1m x 1m. At 30cm it also stands a little taller than the other Gro-Tanks here.

The smallest and cheapest Gro-Tank: a simple first NFT kit for a small tent, a cupboard or a bench.

• 1 to 3 plants
• 69.5 x 38.5 x 18.5cm
• 20-litre tank
• No timer needed

• A small tank that is quick to mix, check and change
• An air line on the pump draws extra oxygen into the solution

Know before you buyA 20-litre tank drinks down and drifts faster than a big one, so check the level, EC and pH more often, especially in a warm tent.

The most plants from a single Gro-Tank tray in a 1.2 x 1.2m tent, over a 100-litre tank.

• 4 to 9 plants
• 120 x 106 x 22cm
• 100-litre tank
• pH 5.5 to 6.0

• The biggest tank of the Gro-Tank kits here, so the solution stays steadier between checks
• Correx cover, pump and capillary spreader matting all included

Know before you buyAt 120 x 106cm it covers most of a 1.2m tent floor, leaving little room to reach round it. Two GT424 kits are the alternative.

A slim channel for a narrow tent or shelf; two sit side by side in a 1.2 x 1.2m tent.

• 3 to 5 plants
• 101 x 48.5 x 20.5cm
• 45-litre tank
• No timer needed

• Two kits mean two tanks, so two crops can run on different feeds
• An air line on the pump adds oxygen to the solution on every pass

Know before you buyThe tray bolts to the tank, so it is slower to set up and strip down than the GT090 or GT205.

A long, narrow channel that runs down one side of a 2.4 x 1.2m tent, a bench or a grow room.

• 5 to 8 plants
• 152.5 x 48.5 x 19cm
• 60-litre tank
• No timer needed

• Just 19cm high, leaving the height of the room to the plants
• One tank of solution goes round again and again, so very little feed is wasted

Know before you buyIt needs more than 1.5m of floor, so it will not fit a 1.2m or 1.5m tent. Check daily that the film reaches the far end.

Fresh mat for every crop keeps the film even across the tray, so new roots never land on a dry strip.

• 20cm or 40cm wide
• 25ft to 500m rolls
• Cut to fit
• Any flat NFT tray

• Stops the solution racing down one line of the tray and leaving dry strips
• The spare matting for Gro-Tank systems

Know before you buyRoots grow into the fibres and old mat holds root debris, so it cannot be reused. Lay fresh mat for each crop.