I just got a 10 gal tank for my kids. it was mainly to put their african dwarf frogs (frog-o-spheres) into something bigger than the box theyre in now. We have 4 frogs and were looking to add some fish to the tank. My older sons loves the pristella tetras (because you can see their bones) but I've read you should have 5 or more in the tank. If I add 5 to the 4 frogs, according to the calculator here, I need to up the filtration. Any suggetions as far as fish (type & amounts) and the filtration situation? Before I get beat up, I know I shouldve got the bigger tank but I dont have a place for a big tank yet. Thanks in advance for the help.