seeing some high wattage suggestions, be thinking for a power outage run the minimum to extend battery life.
my plan, not to worry about the lights, CL, skimmer, basement return pump etc. Just be throwing in the heater and power head I normally use for my water changes into the display for heat and aeration. Have run this off a cheap UPS and if looking to be a long time have a cheap little generator. Both are not true sinewave and no problems with the PH, plus if was long term, for the difference in price between a cheap UPS and true sine, go to Aquagiant and but a few more PHs.
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