125 Cichlid Community Tank

So I am brand new here and have been keeping fish for a year now. I have 3 tanks now. Two of which are new world cichlid tanks. Ones a 65 gallon that's (the one with a larger footprint), and a 75 gallon. In the 65 gallon I have my young oscar called ozzy. He's about 3 inches big now with a 4in blue acara. And my 75 houses a 4in female jack Dempsey, 3 3in female black convicts, and a 2.5 in green terror all of my fish are young I just got into these cichlids. My question is could I house all of these fish together in a 125 gallon tank. Or should I move my oscar to the 75 when I get the 125 and move the rest of the fish to the 125 and possibly stick 1 or 2 more cichlids in the 125? I'm worried my oscar will eat the convicts mostly. And the 3 females get along great and swim together almost as a school with my jack Dempsey.

 

I’d put the Oscar in the 75, and all others in the 125.

 

I'm getting a 125 gallon for my central / south American cichlid tank. I have two aquaclear 110's as on now. I'm thinking about adding a fluval 406 to my tank would that and the two aq110's be enough filtration for 1 jack Dempsey, 3 femal convicts, 1 green terror and a blue acara.

 

Yes, no question.

 

Okay second question. Would 3 aquaclear 110s be sufficient? As a alternative as I like the aq110 system and function very much.

 

That would be fine. You’re looking at a lot of current though for species that generally don’t prefer it. I’d go with a smaller AC in the middle.