Question about battery backup

[jingfee]

Hi,
I've been looking at possible solutions for keeping my aquarium alive during a potential outage. Most important I would say would be to keep the circulation pump and streamer pump running, but I have hard time finding out how big of battery I would need. I've been looking at a rather affordable one, which is 26400 mAh.

The circulation pump I'm using is Eheim CompactOn 1000 (1000 l/h, or 264 g/h), and the streamerpump is a Vortech MP10QD.

Does anyone have any experience and would know how long a 26400 mAh battery would be able to drive the abovementioned pumps (minutes, hours, days)?

 

[lapin]

Battery = 26ah
The MP 10qd says 18 watts max so @120v should be a draw of .15amp
The Eheim CompactOn 1000 says 15 watts so @120V should be a draw of .13amp
Example
A 100Ah battery, if made for back up and not for starting, will power a 5 amp appliance for 20 hours if new and fully charged