[mseepman]

I was planning to watch the unit's temp quite closely anyways, since I now have ballasts running along a thin wall beside the MH reflector. I don't think they will get too hot but you never know.

As for the water temp. I've had a cheap coralife thermometer for ages and I don't trust it at all. I just got a new pinpoint wireless thermometer this week and once I have batteries for it, I'll let you know how the tank temp varies. If I do trust the coralife, then my tank is always too cold at 73 degrees 95% of the time. Sometimes in the middle of my lighting cycle, it will get to 73.7 degrees. My heater (an ebo jager) is set to have a 78 degree temp and it doesn't run all the time so that's why the new equipment was purchased.