So Ive had a RBTA thats been wondering around my 60 for weeks,running over corals,knocking stuff off their perches etc. so I decided to move him to the 40 with the mantis and the clowns I have in there. When I stuck my hand in the tank it felt a bit cool so I tossed my temp. probe into that tank to test it. We're sitting at 75 right now. Ive had the heater set at 79 this whole time and thought it was at that temp.
The mantis and clowns that have been in there have been doing great so I might raise it a couple degrees for the nem but like they say it it ain't broke...