Many schools allow ten gallons, and some (like mine, omgg) allow TWENTY! 8D Whooohooo!!!
But but. I suggest staying under 7 gallons, not only for space but also weight, because a full 10 gallon with only water is 90-110lbs!
I also like the hawkeye, its a great tank for a great price. I also own this sucker:
A well priced tank with a good everything, though its filter is VERY strong and requires both a baffle and a jammed up intake (which sucked up my poor boy's fins :'c )
I also own this guy, which says 5 gallons but holds 6+:
I love this tank.The filter is great (though it will need a baffle for the outtake) and is easy to cycle. Its not a good tank to divide, though, because of the shape. Petsmart has sales on these all the time, especially with their petperks card.
Please dont get any more fish in a tank under 10 gallons! If you get another betta, which is the only option, it will need to be properly divided. Most fellow tank mates, though small, need friends in groups too large for a less than 10 gallons tank.
If hes very aggressive, though, just stay away from anything :) A snail is fine in 5 gallons, but they poop a lot
ew. I like nerite snails, personally. (Apple/Mystery snails are too big and freak me out!!!)
A tank over 4 gallons will need a new heater, btw :)
Pics pics pics when you decide!
(Btw- Im in college too, so these guys are college-approved! Hahhhh!)