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#1
11-19-2009, 04:01 PM
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Picked this one up from Canadian Tire. A little more expensive but it will run my big pump for over 6 hours. Thats plenty of time to get the generator going if I need it.
I don't worry about heat loss as I made some panels out of rigid pink styrofoam that I can strap to the tank to keep it warm. A pretty cheap insurance policy. The nice part about these is the switch is instant so nothing has to restart. http://www.canadiantire.ca/AST/brows...1%252C800W.jsp
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250 gal display tank plumbed directly to my wallet 
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#2
11-19-2009, 05:25 PM
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Haven't had a lengthy outage here in some time, but when it did happen I used one of my truck batteries and a small inverter to run a powerhead and my skimmer. I also have the PennPlax battery powered air pump that senses power loss and kicks in automatically. The car/truck battery & inverter is not a long term solution but it's relatively cheap and works well to run a powerhead or two for quite a while. Downside is, it's not automatic, you need to be home to set it up. Also wouldn't try to run a heater too long unless you have a very large battery. I'm able to run my skimmer since it's old tech air driven (limewood air diffusers), the small powerhead and air pump only use around 11 watts.
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Mike 77g sumpless SW DIY 10 watt multi-chip LED build  http://www.canreef.com/vbulletin/showthread.php?t=82206
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#3
11-20-2009, 02:11 AM
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The temperature is not the problem unless it goes below 70K The tank if large enough will cool down slowly. You can help it slow down even more by floating containers with boiling water if you have someway to boil the water. (your neighbours gas range or your BQ).
The problem is the lack of oxygen which will kill the inhabitants. Whether it is a battery driven air pump or a egg beater, anything that either injects oxygen into the tank or stirs the water is needed. As well as the welfare of your inhabitants, you have a lot of money invested in the tank. Nothing if worse than a tank wipe out. Go to Canadian Tire and get what you need.
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