tank

If you plan to keep all 3 balas and the pleco, at the least, plan on a 150. Those fish will grow and crowd themselves out. Just to give you an idea. I currently have a 22 inch arowana, 2 eight inch oscars, a 6 inch bala, a 14 inch and 17 inch pleco in a 150. Right now it looks as though my arowana will not make it. If he does, him the bala and the 17 inch pleco move into a 600-700 gallon next year, with the oscars and 14 inch pleco in the 150. Think about it, sounds like you might not have done your home work on these fish before you bought em. Not takin any stabs at ya, we all made some stupid mistake at one time or another. :p If it's a 75 you want, get rid of 2 balas and keep one and the pleco and go from there. You could think about adding a dempsy and you would be okay. But you would need some extra filtaration. If you want to keep em all, and it were me, I would get a 200-250. That's a lot of bucks, so think about it. Good luck. :D
 
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