It takes a big UPS to really back up the pump cycle for any length of time... on the order of about 500W UPS per pump/per hour. This is just an estimate - and your mileage may vary. You can look at various UPS devices on line and see what kind of time they provide driving various wattages.cool, thanks. i only need it to run 1 70w pump for as long as the power fails for....possibly overnight sometimes. and possibly some cfl's to keep my lighting schedule ok for the ladies. but mostly just for 1 pump.
so what size would you guys recomend?
In the end, a generator is the only true way to backup your op. Honda.
If you are home when the power goes out, there are a few things you can do... If you have a sizable UPS that can drive your pump, set the time to 1 on 10 off to maximize your battery life.
Without a UPS - tilt the front end of the flower unit up so water is retained in the fence post... you can hand water down the open end to keep 'em alive.
You can float veg and clone lids in the tub for quite some time (nutes will stain your bath tub too! haha).
Even a flashlight can trigger the light signal...