I'm on a vacation and I'm going away for 8 days. I left a 10 day food brick in the tank. Last time I went on a holiday I put a 3 dayfoodbrick in because I was going away for 3 days. When I came back the fish (goldfish) weren't doing so well. Now I have 2 mollies, a guppy,a gold algae eater, and 3 snails. Will they die?