hello all.. i installed a new tank with sump yesterday. today afternoon when i was looking at the sump i saw a crack in it. so i called the guy who did the job and he told me not to worry about it and he will fix it on sunday. went out and came back home at mid night and found water all over the place. the crack seems to be leaking now. i called him again at mid night and he said he will pass by in the morning to fix it. now what i want to ask can i shut the filtration off? will the fish and corals be ok for like 14 or 15 hours? i am worried about the electricity the cables are near and incorrectly positioned. please help me.