[westom]

Originally Posted by Greenmaster

I don't think anyone else has said this but I feel this is one of the more important investments for a reef tank...(especially one that has thousands of dollars of livestock). I would suggest getting a UPS modifying it and adding Deep Cycle batteries so that it can last for 12 hours or so...

First you cannot use deep cycle batteries in interior environments. They can output dangerous gases.

Second, a typical UPS outputs power so 'dirty' as to harm small electric motors and power strip protector. Same electricity is ideal for routinely 'more robust' electronics. To obtain a UPS with sufficient clean power starts at $500 or $1000 - before violating UL safety ratings by adding external batteries. Or power those motors, etc from a DC power supply that would isolate DC motors, etc from AC mains by first converting AC to regulated DC power. But that means replacing AC motors with DC motors.

Options are available. But one should first learn some simple electrical concepts before changing things - ie externally attached batteries.