What did you guys do when we had all that load shedding?? Did you rush out and buy generators.

Nope.

Just adjusted my feeding schedule so that i did not feed from two hours b4 the load shedding started, fed 30minutes after power came back on

See https://koionline.forumotion.com/chat-koi-related-f33/load-shedding-ups-diy-t362.htm

Why I asked is, this morning my air compressor tripped off in the power box and i wondered why the fish didnt look happy and were huddled together. Then I saw it. The compressor was still warm - so was probably off for an hour or so.. I switched it back on again.
When we had the load shedding our power used to be off for hours, every other day - they always had problems getting it back on again.
I like that battery idea to keep the oxygen.