Setting up my 37 gallon aquarium

heh liveaquaria says their MAX size is 5" and my tank is 30" long. And tank size should be 30 gals and mines 37. That seems good enough. If I wanted a bunch of neons I would have stuck with a 20 gal. What fish do good in a tall tank? Discus? It will probably eventually be a semi-agressive tank because I'm hellbent on getting pufferfish. South-americans seem to be the most peaceful.
 
30" long isn't bad then. I was thinking tall as in a hexagon tank.
 
Is that reverse flow kit compatable with the aquatic gardens or profile 600 powerheads as well?

No, you would have to go with the penguin 660r or some other brand that has a reverse flow kit.
 
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