That is <"what I do as well">.Best is the drain the cannister from water and just keep the media moist and the cannister open. This will keep them alive for a rather long time if not for ever. Or keep the media in an open bucket and moist, it doesn't need to be submersed.
I like thecsound of that, i feel much better nowAfter a power failure one Xmas, a substation neutral fault, everyone on my estates house RCB's tripped. Power was restored after couple of hours, but we were away and only came back 3 days later to reset house RCB. Fish water temperature was 15 odd, anyway all powered on fine, fish were ok after filter being left 3 days.
I've had a bit of a history of <"turning the filters off during maintenance and then not noticing for a week.">. It used to worry me, but when I thought about I realised that it was probably going to be OK, because I have chunky sponge pre-filters on the tanks and relatively little biofilm in the filter itself.Power was restored after couple of hours, but we were away and only came back 3 days later to reset house RCB.