What is the best backup power supply?
 

I need a backup power supply does anyone have a recommendation? I saw a 900w power supply box on amazon. How long will that box run a 12w powerhead? Please help. Thanks.

You need to find out what size battery it comes with rated in amp hours

A generator

+1 - Knowing the power (900W) and the specs on the battery one can give a reasonable estimate on how long it will last. Do note though, it will only be a rough estimate given it's difficult to take into account line loss and heat loss.

Or that....at least in my house :). My generator cost me about the same as two battery back up units from Ecotech.....and I'm much happier with it given I can run the tank, fridge and TV.

Keep in mind that normal battery backups are not designed for extended use with motors or heating elements. Meaning they may work for lights and your controllers, but that's about it. The only solution is a generator.

Jeff

Most inexpensive battery backup units provide a stepped approximation to a sine wave rather than a sine wave. Works fine for many products including computers with switching power supplies. However they don't work well with motors. You'll probably find that the backup won't even start up your power head.

I just purchased two Vortech powerheads along with the battery backup. It's supposed to keep a powerhead going for 30 hours, but my main purpose is to keep the powerheads running long enough for me to hook up the generator.

Generac Guardian generator 20 KW is best. Least expensive best are battery operated air pumps.

Do you have a site of the product steve?

My concern is - what happens when I am out of town in the winter and I need to power my heater? I guess I need to train someone to hookup the generator?