whats the best battery backup for my pumps

[Cameron]

No problem and I enjoy helping out. My dad used to build a house a year when I was a kid so I got to plumb, wire, hammer pretty much anything and everything. Then I moved onto building my own PCs (as in writing my own processor code and building my own power supplies). Then came the car/motorcycle thing where I took apart (and rarely got it back together again at least with all the parts in tact) and built my own rides.... now I do aquariums. I am shocked how handy all that other stuff comes into play with aquarium technology. I am seriously considering some civil engineering courses just to understand hydrodynamics better.

[Bleedingthought]

Originally Posted by Assault

I got a 240g, a 210g,a 200g,a 150g, a 135g,a 90g, and a 42g hex. That's big enuff 4 now, or is it?.....

You're getting there. Next stop should be at least 4 times the biggest one.

[Roland Jacques]

You don't need to worry to much about your main recirc pump running. Circulation in your tank is going to be key for animal health during a power outage. the reason most fish die during a power outage is lack of O2 in the water. Nh4 No2 don't normally build up if you have circulation in your tank during a power outage.

That and the price, is why the back up emergence battery power air pump work so well. If you want to have a battery back up like a UPC type use it to run a low watt power head (Hydor K-4 12 watts) it will run for a long time. (your main pump 120 watts +++ will not run very long). If you use the power head instead of the air pump just make sure you point it up at the surface to insure good O2 exchange.

[Assault]

thanx for the advice, that sound like plan