Nutriculture GT System Top Tray Plagron Cyco XL sits in the

Cyco XL sits in the professional-grade phosphoric acid booster category — fast-acting

Works with inline filters

buying the individual full-size bottle is usually more cost-effective once you know which ones you'll actually reuse

Leafy greens are the sweet spot — lettuce

Nutriculture GT System Top Tray Plagron Cyco XL sits in theNutriculture 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