Hi guys, I've recently decided to add some fish to my tank as it's been pretty bare the last few months. For last several months, my 55 gallon tank has only been occupied by four fully grown Angels and an Opaline Gourami. I went to my LFS and bought five Danios. The week following I bought 12 more from another shop, along with four Bronze Cory's. I did a few water tests and it appears the ammonia has risen slightly to about .25, if not less. I'm going to assume it's because of the very sudden increase of fish. I've been doing second-daily water changes to lower the levels. As a last addition, I wanted to add an algae eater, most probably a Bristlenose, unless someone could recommend an equally reliable sucker fish. Providing I continue doing my regular second-weekly water changes, would this be okay, or does my aquarium seem overstocked as it is? Any advice is greatly appreciated, Best regards.