I got home from work this moring and saw my pride and joy 150 reef tank temp on my chiller reading 71 degrees. The heater is set at 78 degrees. The dam thing broke less than year old 100 bucks down the drain. I have sps and lps fish and inverts the coral seems to be expaning the fish look stressed. I'm i at risk for loosing everything. I have a back up heater at set it at 77 i do not want to jump the temp to much . any hting else I can do once again thanks guys