Hi, I’m new here. I have a tank that’s about 125 gallons, I inherited this awesome tank from the previous owner. He didn’t really explain how to care for the tank other than feed the fish and make sure to dump the poopy water, and he said everything else would be fine. So a few weeks after he left two of my fish died as well as all of my sea anemones and now I have some sort of white algae on my coral or at least that’s what I think it is and now it’s starting to get this bright green stuff on it too. Like I really want to keep this tank it keeps me relaxed. So I was just wondering if anyone knew what this is what I can do to keep my tank in tip top shape