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I am setting up a 55g plexi reef tank and I will be using a 400watt metal hallide lamp. How high from the tank should I have the lamp set up? Cooked fish aren't fun to look at.

Where did you get your APC and do you remember how much it was? [ April 18, 2001: Message edited by: thecleaner ]

What happens to filters such as wet/drys if the power goes out. I live in California, so you know I have a little bit of a concern. Any suggestions about water overflowing out of the filter, keeping fish alive, etc.

What is the general rule of how long should lights be turned on for a reef tank? i have a 400watt metal/high pressure sodium hallide on a 55g tank.