How to protect your fishes during/after power shortages?

[Fuzzy]

You can get a 500VA UPS for around $80 - $100 these days.

Can try Best Bargain on 5th floor Sim Lim Square (back row, forget unit number) they also have pretty good prices on all kinds of memory sticks.

[derekchia]

UPS? I don't think it is necessary.
Just buy some battery operated air pumps and batteries will do, cheap, simple and hassle free.(Cost <$7/set).Good enough to keep livestocks alive.

[michaelmah]

battery air pump may help, but for crs tank,....UPS may better.

[alfababy]

Here is a link below for APC UPS that can be use for reference:

http://www.ivolute.com/index.php?categoryID=178

I think 500VA is good enough if connected to the most essential equipment:
pump/filter - 10W to 30W (depending on capacity)