Nutriculture GT System Top Tray — Replacement NFT Tray for Professional Hydroponic Growing
Best for: Growers replacing worn trays or expanding existing NFT systems without buying a complete new kit
Our thoughts
If you've got a GT system running and your top tray's seen better days, this is a straightforward swap. Nutriculture's NFT tanks are built tough — UK-made plastic that lasts years in a grow room. Worth getting ahead of any wear rather than waiting for a failure mid-cycle.
The Nutriculture GT System Top Tray is a direct replacement top surface for the GT NFT (Nutrient Film Technique) range. It sits on top of your GT reservoir and provides the sloped channel where your spreader mat and plants sit, with engineered grooves to distribute nutrient solution evenly across the whole width. This is proper professional-grade hydroponic equipment — UK-made, designed for reliability, and built to handle years of grow room use without compromising performance.
How it compares
The GT range is the entry-to-mid tier of commercial-spec NFT systems, but that doesn't mean basic.
- UK-made tough plastic construction — outlasts imported alternatives by years
- Factory-engineered channel slope and distribution design — no guesswork, no poor flow
- Compatible across the full GT range (GT205, GT424, GT100, and larger sizes)
- Significantly cheaper than replacing the entire system when the tray wears
- Same reliability you'd find in commercial operations, scaled down for growers
In simple terms: you're getting the tray that's proven itself in thousands of setups.
Usage guidance
This tray works as the foundation of a Nutrient Film Technique system. Here's how it functions in practice:
Installation
The top tray sits directly onto your GT reservoir base. The feed hole faces forward for easy pump access. Critical point: the system must be absolutely level. Even a slight angle kills your flow — too fast means roots don't get enough contact time, too slow and they start to dry out.
With spreader mat and plants
You'll lay a spreader mat (thin fabric) across the tray to distribute nutrient solution evenly. Your rockwool cubes and plants sit on top of this, poking through pre-cut holes in a light-blocking Correx cover. The constantly flowing nutrient hits the roots as a thin film — hence the name — which keeps them in a high-oxygen environment.
Pump operation
Start seedlings off-system until roots show through the rockwool block (usually a couple of days). Once they're in the channels, run your pump for 15 minutes every hour while lights are on initially, then increase to continuous flow as the root mat thickens and demands more nutrient contact.
Maintenance
Change your reservoir regularly — don't leave it stale. Stale tanks breed nutrient imbalances and deficiencies quickly. Clean channels occasionally to stop any salt buildup. The design handles this well if you stay on top of it.
Technical specifications
- Type: Replacement top tray for Nutriculture GT NFT systems
- Compatible models: GT205 (71cm x 40cm), GT424 (112cm x 50cm), GT100 (122cm x 108cm), and other GT range sizes
- Material: Tough, light-proof plastic with reinforced channels
- Design feature: Factory-engineered sloped channels for even nutrient distribution
- Installation: Direct replacement — fits onto existing GT reservoir bases
- Fits with: Spreader mat (sold separately), rockwool cubes, Correx sheeting cover
- Construction: UK-manufactured
Who this is for
- Growers with existing GT systems needing to replace a worn or damaged top tray
- Anyone expanding an NFT setup by adding another GT channel without replacing the whole kit
- Commercial or semi-commercial operators running multiple GT systems and keeping spare parts on hand
- Growers who want the proven reliability of Nutriculture's hydroponic design without the cost of a full system replacement
- First-time NFT users upgrading from a budget starter kit to proper commercial-grade equipment
Our take
This is a straightforward spare part that does exactly what it should — provides a properly engineered surface for NFT growing without any fuss. Nutriculture's build quality means you're not buying a disposable component; you're buying durability.
If you've got a GT system running, it's worth keeping one of these in reserve. Good time to buy while stock lasts — saves the panic of a mid-cycle tray failure and the cost of sourcing emergency replacements.
