Thanks!!
I never used a heater, I left it at the 76 range, it was constant day and night. Since taking the top of the tank off the temp dropped to 69 and now I have crazy evaporation!! I went with a stealth 50w, it fit perfectly in my third chamber, all the rest are filled up with stuff, chaeto, LR rubble, chemipure,....... Most people I have seen put it in the first chamber, it seems to have the best movement! I created a small current in the stagnant third chamber so I could put a heater and purigen in it! Let me know if you need any help!