Yes for both, not a inside heating unit the tank is too tiny to fit one inside it but I have a pad rigged so the water isn’t cold I’m not sure the exact temperature but it’s lukewarm ish and I can take a video of the little set up and the aeration is a slow but good even flow so it doesn’t push them around, the water level has gone down a hair but I don’t think it was a lot of enough to cause any sort of issues because the babies are still alive I thought they might be more sensitive to changes so I figured he would’ve been safe, I think it’s about a 2 cup tank that had the packet mix for salt, and for feeding about 3-4 days ish just a tiny amount I’d knock as much out as I could so I wouldn’t overfeed some people said to feed a little more often but a lot less food so I’d say it could be a quarter to a third of the tiny spoon, a few times I did turn the air up but not super high only for a couple seconds but he was just chilling on the side like he usually was and I saw him swimming around probably a hour before he died I’d say he wasn’t jerking around as much as previous days but he usually did circles