Hubby's new fish died today. He has had the tank about two weeks. Put water in it let it sit for 24 hours. Then got the fish added them after soaking the bags in water for a period. It has been about two weeks since the fish have been swimming in the tank. They all died within a few hours of each other. One is left but swimming on the bottom, we fear he won't make it either.
Any ideas on what we can do differently for next time. They were types of goldfish and an algae eater.