Quote Originally Posted by Gatekeeper777
I dont see why not. they are stone and shouldn't absorb any nutes. Just toss em in a burlap bag and leave em over night in a river or in the washer minus cheer or something they will get cleaned.:jointsmile:

what you need to find out is whether or not they are leaching anything into
your nutrients. if so then that will skew your ppm's at the very least.

not saying they are, just that they might