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water changes

Subject: water changes
by jayvee on 5/9/2006 8:22:02

Ok, silly question but i need to know!
Water changes have been very simple in my fish only marine set up so far.
However, having added some lovely mushrooms and a leather coral i'm unsure if i need to move them to a lower position in the tank when i drop the water level?
Can they be exposed to air for any length of time? (i.e. when doing a water change)