Well, the 180 is not even happening now. My mom started argueing with me and then some how the conversation turned to the 180 gallon, and now I cant get it, but This really isnt the greatest house for a tank over 5ft so I might get a 180 or bigger in a year or two after we move out of our current house.. So, I might just get a 75 and put it in my room for some Plat. Senegals. How many would be a good number? I'm thinking a trio?