Its an ebb/flow hydro setup using airpots and coco/perlite. They are all "original kush" except for the small clone in the back which is a blue/pk.

I used a PH buffered A/B nute - so PH is rarely a problem (if it is I usually just change the water).. Weekly water changes with r/o water is a bit much for some people - but I prefer to not "chase" my PH!