| No, I would not have thought so. I Have a Q tank in guarage and I don't know what temp it goes down to at night but it is bleed'in cold and the tank stays around 78. Are you sure your heaters are set correctly and have you a spare thermometer. I always have three running in my main system sump
Brucey
__________________ 160UK Gallon. (192US Gallon). 400Lbs LR. Aquamedic Turboflotor 5000 Shorty skimmer. Arcadia 3Series pendant (3x250W 14,000'K MH & 2x58W 60" actinic) (DIY cooling fan). Tunze 7095 Multicontroller & 2xTunze 6100 Streams. Redsea 100 Aquazone Plus ozonizer and redox computer. Aquamedic Ocean Runner 6500 return. TMC Vectron 30W UV sterilizer. Aquamedic Aquaniveau auto top up system through Deltec 500 kalk stirrer. PurityOnTap RO/DI. Deltec FR509 (ROWAPhos). Aquamedic PH computer controlling KNOP HD Calcium Reactor. Setup Nov 2002 See my tank here http://www.reefsanctuary.com/forums/...&threadid=4486 |