I've had this bta for over a year and a half and when I got it man was it bubbly.(1st pic) It lasted about a month be for it stopped bubbling up all together.(2nd pic) Its been perfectly healthy and has only split once. I read and was told that some Btas just don't bubble up and sometimes there is no reason. I tried feeding more, I tried feeding less, I tried more flow and less flow but not until I tried more light did I get results. Up to a month ago the only light over my 29 was a ai prime, which I assumed was more than enough for my entire tank including my BTA. But I noticed my BTA reaching up towards the light even though it was positioned high in my tank, so even though I knew it was over kill I put a kessil 160we right over the bta and so far it's really helping. Every morning it's more bubbly and every day it lasts longer through out the day.(3rd and 4th pic) I'll take one in the morning tomorrow cause that's when it's best for some reason.

