Oh wow. Less lighting. I always thought acros needed a lot of light. I don't have a way to measure PAR so I guess I'll start by removing 2 of the 4 T5 lights and then adjust from there if needed. I'll also look into revive to learn more about that. I'm not sure what DT stands for, but I use RO/DI that I make, but if it helps, I could do water changes using water from the main tank instead of RO/DI water. I can also feed them less if that is being detrimental, but I had done it with the hopes that whatever I fed them would suppliment whatever I'm doing wrong to keep them alive, which hasn't help so far. So far, I'm learning a lot here, and if anyone else has an idea, please chime in.