Help needed. This is our first aquarium. We bought two oscars. One died within a day and the other is now dying. The replacement guy there is doing well as are the Danios and two minnows. My tank has cycled and I had an algae bloom come through, but it seems to be getting better. A week before this little guy got sick we started carrying out 20% water changes every other day to help with the algae bloom. Two days before he got sick I increased their feeding to 3x a day, per internet info about oscar's less than 4 inches should be feed 3x a day. Also, I said 200W filter, that should be 200W heater.