Using Red Marbles in Hydroponics.

Jbonezz420

Member
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That's what I've got right now, just started again.but like I said that's drip hydro not DWC but theyre in two inch rockwool, AN 3part, clones
 

MickShipley

New Member
I have not tried this but you might go for lava rock pebbles? Pumice is light although it might float so....
If you crushed the lava rocks then screened them with 1/2" hardware cloth then rinsed the dust they would be similar to clay pebbles. You could even boil them before use to keep pathogens out.
 
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