I have been told that Bilge pumps are not good for continuous operation in Aquaponics, but I was wondering if they can be use in a battery backup setup for power outages or emergency only. I have an 80 watt solar panel, 70ah gel battery and a 30 watt 12 volt bilge pump (800gph) and was contemplating the idea of making a solar battery back up where it can keep my battery charged and run the Bilge pump during power outages.....any ideas?