KurtG wrote:


What kind of temps? The problem is that oxygen saturation levels drop
as temps go up. I've been touching 83 in my display tank lately, and
have lowered my AC a degree to counter it.

--Kurt

The ambient temperature is 72F at the moment (quite low for the time of
year). The Nano is up to 88F. The new tank is 80F before I switched on
the AC. There is no AC in the room where the nano is.

My thinking is that if I move the corals out into the big tank then I
can keep the nano as a FOWLR and reduce the lighting accordingly. The
fish do not appear to be showing any signs of distress - just the corals.

Gill