Grodan® Stonewool A-OK 36/40 1.5" Starter Plugs™ Ducting 2 foot has 2

2 foot has 2

growers usually need to double or triple phosphorous levels

If planting in containers outdoors

Do not use with digital ballasts

so no more clamps or reducers needed

Grodan® Stonewool A-OK 36/40 1.5" Starter Plugs™ Ducting 2 foot has 2Product Details Grodan A OK 36 40 1. 5 in x 1. 5 in Plugs (98 Sheet) (30 Sheets Cs) Grodan Stonewool (rockwool) is made from molten rock spun into cotton candy like fibers and then compressed into cubes, blocks, or slabs. Where other rockwool brand manufacturers cut all sizes from one batch of wool, Grodan is unique by making different types of fibers. The purpose is to support the requirement of the plant in the different plant stages. Grodan has a