GT205 - Silver Correx Top Plate - Genuine Replacement for Your Gro-Tank
Best for: GT205 Gro-Tank NFT system owners who need a replacement top plate after wear, damage or algae build-up on the original.
Our thoughts
Correx plates take a beating over time, whether that's cracking from cutting holes for net pots or just going green with algae after a season of light getting through a worn spot. This is the specific silver replacement plate for the GT205, no cutting a generic sheet down to size yourself.
This correx (corrugated plastic) top plate is the light-blocking cover for a GT205 Gro-Tank NFT (nutrient film technique) system. It sits over the growing tray and nutrient channel, keeping light off the root zone and the recirculating nutrient solution, which helps stop algae taking hold in the channel below.
It's sold as a spare or replacement in silver, matching the standard finish supplied with the GT205 kit. Holes for net pots or rockwool cubes aren't pre-cut, so you mark and cut them to your own spacing before fitting.
How it compares
It's a small, specific spare part rather than something with genuine cross-brand alternatives.
- Vs a generic sheet of correx cut to size: this plate is pre-sized to the GT205's tray dimensions, so there's no trimming or measuring needed to get a flush fit
- Vs leaving an old, cracked or algae-covered plate in place: a fresh plate properly blocks light again, cutting down on algae regrowth in the channel below
- Vs replacing the whole GT205 tray and tank: far cheaper than buying a new complete system just because the top plate has worn out
There's no meaningful upgrade path here, just a correctly-sized replacement for a part that wears out over time.
Usage guidance
Fitting
Lay the plate over the GT205 tray so the edges sit flush with the tank, matching the position of the original plate.
Cutting holes
Mark and cut holes to suit your net pot or rockwool cube size before first use - correx cuts easily with a sharp knife or holesaw.
Light-proofing
Check for gaps where light can reach the nutrient channel and patch or reposition the plate as needed, since light exposure is the main driver of algae growth in the channel.
Technical specifications
- Compatible system: GT205 Gro-Tank NFT kit
- Material: correx (corrugated plastic)
- Colour: silver
- Function: light-blocking cover for growing tray and nutrient channel
- Type: spare/replacement part, holes not pre-cut
Who this is for
- GT205 owners whose original top plate has cracked, warped or gone green with algae
- Growers upgrading net pot or rockwool sizes and needing fresh, uncut correx
- Anyone doing routine maintenance on an existing GT205 system
Our take
This isn't a product you get excited about, it's a spare part that keeps an existing GT205 system running properly rather than replacing the whole thing over one worn plate.
If your current plate has seen better days, this sorts it. Does exactly what it should, day in, day out.
