Thanks, I am glad to know that I may have done something right.
What causes bacterial blooms in established tanks?
The water is still cloudy, I did another 30 gallon water change yesterday. I don't think it is the green coming back, and the cloudy is still a huge improvement over the water being so green I couldn't even see the fish.
The good thing is that no more fish have been lost for a while now.
MANY years ago when I was young, I had a 20 gallon tank. Back that many years ago, all I had was a corner filter floss filter, and don't recall any thing about a tank cycle or water changes. All I did was feed them and top off. I never had cloudy or green water, so this has all been very strange and frusterating to me.
I have had saltwater reef tanks for 7 years now, and they haven't been as fursterating as this tank! My current saltwater reef tank is a 400 gallon in-wall set up.