i use rottech its an orange gel works great and i soak rockwool in phd olivias clone solution 50 -60 clones under 100 w i like peats but the rock is more convienient for me takes about five days for roots to show then another week abouts for webbing then straight into flower two months later a little 8- 12 inch stem with about 4g dried and cured (D.O.S.)