GROW!T Perlite Grade #4, 4 cu ft Hydroponics This lamp has been specifically

This lamp has been specifically engineered for horticulture applications

Add 2 tsp per gallon of water and let brew for 24 hours

MICRO is to be used throughout the entire growth cycle of a plant

blocks out harmful light and optimizes product visibility

GROW!T Perlite Grade #4, 4 cu ft Hydroponics This lamp has been specificallyGROW! T Perlite Grade #4, 4 cu ft Product Details GROW! T Perlite is a versatile and inert soil amendment and soilless medium. Use it to aerate soil in container gardening, for germination and propagation of seedlings, for propagation of cuttings, and as a hydroponic medium. Hydrofarm searched globally and went to great lengths to find a source of top quality perlite, and succeeded and what we found is offered in the GROW! T line of perlite products.