I have a new 75 gallon tank. It's already cycled and is running an aquaclear 110. Is that filtration enough for just one full grown Oscar? And maybe (that's a big maybe) just one other cichlid that can go with an Oscar. I've seen in a lot of posts people suggest keeping a lot more filtration but I don't understand. Aquaclear 110 is rated for 110 gallons. I only have a 75 gallon and even that is not going to be fully stocked. Im only planning on having one or two fish. Yeah I know oscars are messy fish but is 110 gallon filter seriously not enough? Please help. And suggestions for the second cichlids will be appreciated.