Sorry I must have been a mistype, its actually a 55 gallon (I don't know how I got 75 there...) but I was able to get it for virtually nothing. Thanks again to everyone for the advice on this topic it is much better than I could have asked for and answers all questions I had. Thank you all again so much.

Now for a question Slim raised, do you think a 55 (48x13x20) would be too much for a female ball?