Temp swing

[savageAJC]

my drops to 78 at night, and is 80-80.5 during the day..so far ive had trouble keeping sps alive.. i have a frag of (sp?) ponicillopora that is doing great, otherwise other stuff has died even my caps! i have 2 150wt mh and 2 54 watt mhs.

 

[sfsuphysics]

IMO its not that temp swing, a swing of 2 degrees really is minor.

 

[savageAJC]

ok thx, so now i have to go buy a test kit and check my other params.

 

[Reef Bass]

Yeah, and not just one test kit either. IMHO, one really needs to be testing "the big three" (Alkalinity, Calcium and Magnesium) and then minor players like nitrates, nitrites and phosphates if there are issues when the big three are in range.

+1 for a 2 degree daily swing not being the source of your issues.