Tank Talk

My name is Ronnie. Watched just about every KGTropicals video on youtube and wanted to ask my question here because I like John.

I have a 75 gallon bow front rr aquarium with a 20 gallon sump. I am converting it to freshwater. I know, I know.......my wife and I are having a baby and salt is just too much to keep up with. I am wanting to set it up for South American cichlids.

few questions.

1. I am making the sump a refugium and am wondering if that is going to be enough filtration. I know it was great for my saltwater, but not sure exactly how well it works for freshwater.

2. How many South American cichlids might I be able to put in this tank?

3. Will I need anything more as far as filtration goes? I've read mixed reviews so would like to know what rel people might say about it.

Thanks for your time.