Hey Dro, got a hot tip for you- replace the bubbler with my newest creation: lpa with a twist. I am using hpa mist heads and a deep cycle timer on a 240 gph pump. roots are, well, look at the pictures. They were just shy of 30 days old, and these were the 4 that weren't getting sufficient spray due to 2 large root masses that turned ot to be males. These have only been getting sufficient feedings for 2 weeks. Cycle time is 3 minutes on/40-60 minutes pause
Note how many roots coming directly out of the net pots. Plus, this uses < half the nute solution. The oversized coco inserts play a roll in that
hth