Since I cant pick up my new 55 gallon until Wednesday, i decided to set up another 20 gallon to pass the time. I would like to have a school of tiger barbs and another school of some other colorful fish in this tank along with a couple bottom feeders. I will be over filtering this with a Tetra EX45 that is rated for a 45 gallon tank. What other fish would make a nice school along side Tiger barbs and, what would be a good bottom feeder?