OK so first off I am a new member. I've wanted to make an account for quite a while. I love this website and hope I can gain wisdom to properly take care of my future pets. I am not completely new to the aquarium hobby. I have kept a 55 gallon with a few cichlids, dither fish, pleco, and silver arowana (I know terrible...) I only kept the tank for about 6 months because we had to move. Then when I went to college I got a 10 gallon. I have raised dwarf cichlids, cories, tetras, and a betta. Not all at the same time. The only original inhabitants are the cories. The cichlids and tetras died because of the water quality. I had to change rooms, when I first moved in the water was orange! Sorry for ranting but the point is I want to do the best I can at preparing the best home for my cichlids. I'm planning on buying a 125 gallon aquarium, I'll use the 10 gallon's filter media or something to help jumpstart cycling the tank. As far as filtration goes I plan on getting the fluval fx6 (if more is needed please let me know). 2 250/300 watt heaters. An airstone. Maybe a powerhead? Sand substrate (not sure what kind... Pool filter?) Rock outcropping, driftwood, Mangrove roots, maybe fake plants for territory/breaking line of sight. I need to get a test kit to test my water parameters still. Now for the actual stocking. I would love to try an EBJD again. I tried 2 in my 55 and lost them to Bloat I think. Now this is my main fish so unless you advise against it I'd like tank mates to revolve around it. I also would like some activity in the tank. I was thinking 5-6 Geo Tapajos (I had one before, it was gorgeous). A rainbow cichlid. And a school of either giant danios or Buenos Aires Tetras, like minimum of 6. I checked the calculator and I was just under 100% for stocking. It said the danios/tetras might be lunched, but that's what I have seen listed from other forums as sizable dithers/targets. I would like to have a semi-aggressive community, but not overstocked. So if this setup would not work I am open to suggestions. I would like something big enough to eat feeders, but not outgrow the tank. I'm not really into Oscars or Severums. Sorry if I made this hard to read, I just want to include as much as possible so you all can help me as best you can.