GROW!T Perlite Grade #4, 4 cu ft Hydroponics blocks out harmful light and

blocks out harmful light and optimizes product visibility

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

eliminates leg problems and minimizes diseases

Intrepid Trio brand Kmag or SulPoMag is 100% natural Langbeinite

Easy-to-use lever for seamless mode switching

GROW!T Perlite Grade #4, 4 cu ft Hydroponics blocks out harmful light andGROW! 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.