Originally Posted by
mckevinfang
http:///forum/post/2792299
lany suggestions on the fuge or should i say sump?
do i need a battery powered pump what will happen if the electricity goes out? will it over flow in a sump/fuge?
I have my pumps hooked up to an APC UPS system. Whenever the power goes off it immediately switches over to battery backup and can power the pumps for about 8 hours. Plenty of time for most outages... If it's longer than that I could switch over to a generator. Having a few battery operated pumps is not a bad idea if you don't plan on hooking everything up to a UPS... The least you can get are some battery powered air pumps.
Whether or not it overflows your fuge in a power outage is totally dependent upon how you plumb your system. The return line that sends water from the sump and into your tank needs to only be an inch or so below the water level. So this way when the power goes out it will siphon down to the opening on your return line and then stop. If you were to place your return nozzle deep within your tank then it could possibly siphon your whole tank out...
You need to leave enough room in your sump/fuge so that water flowing from the display tank will not overflow the sump when the power goes out. This may cause a problem with your HOB filters... It depends on how low you can get the water level in the sump and still have the HOB filters operate.
Basically you want the display tank to drain down to the return line and then stop. Water from the display will flow into the sump and fill it up, but not overflowing. If you can get it to operate like this then you will not have a problem with overflows in a power outage.