Hi everyone! I'm in desperate need of help with our newly acquired aquarium. A friend of ours gave us a 50 gallon tank with an 18 inch plecostomus. when we received the tank, there was only 6 inches of water and nothing but algae in the tank. I scrubbed the walls and slowly added water to the tank. Let the filtration system run for a week and finally decided to get a few fish in there. We got 2 angelfish, 5 black molly's and 5 (can't remember the name
) little colorful schooling fish and let them on their way. This was 2 weeks ago. 4 days ago, we notice baby fish. Wow were we shocked and surprised, but @ the same time, our angel fish died. One the day we found the babies, the other 2 days ago. I woke up this morning to check on them and one of the black molly's is dead. I don't want anymore of these beautiful creatures dying. Any advice?

