Dr,
I switched from hydroton to growstones because of the silica the Growstones leach...
JD
hydration balls that is.
Also considering going to the hydro growstones do they get messy as in constantly messing up rez and tubing with the funky stuff?
Can you reuse them?
Are you watering the same as I know they hold more water?
Ph hold or drifting?
I thought I read they hold a bit more air also....
LT