Reef Temp.

[reefrobert]

Hello all, I have a 20 gal. tank that has a temp of 76 degrees in the morning and around 79 at night after the lights go out. The books say around 68 to 82 for reefs. I have this 3 degree temp change during the 12 hour day light cycle. I have a glass top when I take off help air get to the top and cool the water a little so it does jump the 3 degrees, maybe 2 degrees. I know because the tank is smaller then the 90 gal. that i am trying to get going, that your will have this change in temp. I guess my question is:
Is this temp change possibly going to hurt my reef ?
Also, my lights on around 2" above the glass top on mounting legs
Don't what to remove glass top because the fish that I want to get might Jump out

Any Info about this!
Thanks,
ReefRobert

 

[jacklax]

A few degrees variance is ok...mine is usually around 78 or 79...but with it getting warmer here it got up to 81 yesterday before my wife turned on the ac.

 

[grmreefer2]

it is amazing how many of us let the tank control the temperature of our house!

the obsession never ends!