I have a new tank, just finished the cycle. have a partial cleanup crew working. Tank sits in front of three windows that get sun till about 1pm. Tank is painted black on back and sides so sunlight is no concern other than heat. Heavy wooden blinds in the windows, Temp is getting to 80/81 degrees in the afternoon even if blinds are kept closed. Outside temp is getting to 100/102. Its Texas. thinking of a cooling system of some kind before I go on with stocking the tank. System is about 125 gals total water. Suggestions welcome. Thank in advance.