Can temperature kill

[Zack]

While I was out of town my ac also went out, lucky for me my controllers shut lights off at 79 and my son came home from work and called me.

That reason alone was enough for me to get a controller. Since I've had it, I've had a minor A/C failure while I was at work and my tank shut off the lights, turned on three fans, and had an audible alarm that woke my roommate up to call matinence.

[Bill S]

As noted, a good reason for a controller: If temp exceeds say 82, turn out the lights!

For a short period, corals and fish are pretty tolerant - corals in particular. In the wild, we've been on reefs with the temp over 90. The fish go to cooler water, the corals close up.

[allan]

Didn't save the colony, that colony had been with me since I got the 190.

I've always had my temp around 81-82, but about a month ago I started experimenting and brought it down to 79. But the room was pretty unpleasant. For what ever reason this new tank runs hotter.

I think I'm going to get a few smaller fans to blow across the surface of the water.

Honestly that that with the added space between my lights and water that my temps would have been a bit cooler. On the flip side it seems as if my rocks are purpleing up, not something that happened before.