Hey if you are tight on money and you want I bigger tank I would check out craigslist for your area. I sold my old fish tanks on their and I also bought my 70g on there (100 dollars including all the powerheads, filter, heater, stand, decor, fish and other stuff) Be careful though you can't always trust what people tell you about the tank.
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Tank Videos
6.6g - Planted - Peppermint Jack the trained betta, 1 oto
20g - Fry TankCory Fry Count (Sept. 1): 35
55g - Community tank - 2 BN pl*co, 10 Bronze corys, 8 Harlequin Rasboras, Cory Fry Count (Aug. 27): 38
75g - Jack Dempsey