Acquired a free 55gallon (48x12x21) from a user on fishlore, hoping to get even more ideas to make my decision making even harder, I have a few but looking for more. All I can say is I do not want African cichlids or Oscars. My current ideas. Idea 1: A 55 shrimp tank, a huge cherry or some other kind of neocaridina dedicated tank, I love shrimp even more so than I do fish, they are so fascinating to watch. Problems I see with this one, substrate could be expensive if I went for a more shrimp specialised substrate. Putting in 10 cherry shrimp would look like the tank is empty for many many months. Idea 2: Amazon biotape, probably a sanded or gravel bottom, nice amount of plants but not too crazy. Two or three decent sized root looking driftwood. Stock with about 4 Angels, along with a school of some kind and some bottom feeders. Bit more research on fish that would fit that biotape. Idea 3: My first dirted tank, medium to heavily planted, possibly attempt CO2. Stock with 2 or 4 dwarf cichlids, GBRs or Golden Rams. Not sure what else I would put in with Rams, just make a higher temp community. Idea 4: All about aquascaping, dark substrate, in one of the rear corners build a sand waterfall over a rocky cliff, have the sand lead to a river that spans out to the opposite corner of the tank, not totally taken by this idea, as cool as aquascaping is, it takes the interest away from the fish. Idea 5: Crayfish? Thats what I have whizzing round my head currently, feel free to add to the current ideas, modify them, make new suggestions. Also if you have a 55 gallon I would love to see as many as possible to see what you did with yours. Just to add, African cichlids are beautiful fish, but they are not what I want to get into, the tank setup just doesn't excite me. You can still post your cichlid tanks though, I have seen some real nice ones. Thanks for reading a somewhat lengthy post, I look forward to some good replies!