I've since done as tiny has suggested. I went from the 2x2 cubes,to the rapid rooter plugs. I've got 12 cuttings in them now. About 2 or 3 days from rooting. Any kinds of non disolving matter will be absorbed in the cube and burn your root system.Thats why you shake the nutes before you mix.Then shake somemore! There are solids in those bottles of nute we all buy. More hydroton will give it the chance to acctually flush itself somewhat,thru regular watering schedule. If I've learned anything about hydro,it's this... You screw up it in hydro? Very hard to turn it around versus,soil.. It's more forgiving than hydro. I still love dirt,too.. By the way. Everyone needs a lil' forgivness one in a while! It's taken me 10 years to even consider doin' any type of hydro.

Ga.