Originally Posted by Mumma.of.two
I wouldn't have added any more fish to that tank. It is highly overstocked as it is with high waste producing fish. The pleco will now be adding to an ever increasing bioload. Have you still got plans to upgrade very soon? The brown algae you are seeing is called diatoms. It is very common in the first few months of a newly setup tank. You shouldn't buy a fish to eat it because it will go away after a few months on its own. After it is gone you will have to supplement the food if the pleco more often. Is it a common pleco or a bristlenose?
I have to say it, she's right on the money. The common pleco is a waste factory and get huge 24"+
. It needs to be taken back, a good alternative is a bristle nose pleco. So it seems you have a, green terror, oscar, convict, and a jack dempsey, correct?. Have you researched these fish, tank size/aggression, stuff like that? Or did you before you bought them?
Also, what are your water parameters?