thanks for the input bud. Ive been afraid of the 4" cube rockwool i bought early on. Because of the absorption difference of the rockwool and the hydroton, I just imaged the soggy upper roots in rockwool getting rot and not even knowing. Now im trying to decide whether or not to go ahead and stick the 1.5" cube in even though I dont have the ability to change the 6.8 ph of the distilled water im using. The ph up and down are being shipped right now, but wont show up until sat. If i stick to the "if the cube is light, give it some water to soak up" method, it will be easier for my wife to know when to water while im out of town working. Im really wishing I had bought some superthrive when i did my last order. Is it even possible to buy that stuff locally? The closest thing to a hydroshop around here is a head shop, and I doubt they would have any nutes. Anyone ever seen it at Walmart or or lowes or something? I do have liquid karma coming, but Ive only seen Weedhound suggesting to use it on seedlings.