Plantex Mono-Potassium Phosphate 0-52-34, 55lb Lighting Controllers Superior rigidity over other OD

Superior rigidity over other OD trays on the market

fast-acting

Includes storage pouch

It is UV stabilized with strong marine-grade stitching for years of use in direct sunlight and requires no tools for assembly

On the off chance you blow a relay

Plantex Mono-Potassium Phosphate 0-52-34, 55lb Lighting Controllers Superior rigidity over other ODHydroponic Grade Monopotassium Phosphate fertilizer 0 52 34 MKP is a solid, fully water soluble phosphorus and potassium fertilizer containing 52% P2O5 and 34% K2O, making it the most concentrated commercial fertilizer known (P2O5+K2O = 86%). MKP fertilizer is a very user , crop , and environment friendly, because of the following features: It is a high analysis fertilizer, composed almost entirely of plant nutrients in assimilable forms (K+ and H2PO4