it is cold! check your heaters!

[Ludwigia73]

5 degrees isn't much of a problem, just don't bring it back up suddenly. If you take it up about a degree an hour, it should be fine.

 

[djmicl]

My house was at 65-66 this morning. Tank was at 70. Maybe my heater is not working properly. I increased the temp last night but lately my tank is around 73-75. Too cold? During the summer it’s normally around 76-77 with fans running.

What size heater should I use on a 55 gallon tank?

 

[pedromatic]

I like my house at 74, so I keep heaters in my tanks to keep the temp a stable 78 at night. You guys with the larger tanks may not need it, but 90 and 55 can swing pretty quick. The heaters only come on periodically at night. Last night house temp 65, tank temp 78.