i have a saltwater tank with 1 green chromis and 2 commom clowns i have had a powercut 4 the last 3 sundays the chromis is fine but the clowns after a while just sit at the bottom managed to keep them swimming how long would they be ok with no electeric

i have gone 1/2 a day without power and reefing friends of mine have gone for a day. what we do is add a battery operated air pump to provide oxygenation and occasionally manually move the water surface to provide some sort of flow.