hi guys my question is how low do u guys take ur water down when u do ur water change. the reason i ask this is that i never let my corals touch the air so i stop a inch from them, some times i would like to take more water out, am i doing the right thing. i always take out 10g of water out of my 55g but i would like to change 15 . is the corals being in air for more than 5min a problem :irked: