Hi and welcome to the forum! I would really try and get another larger tank to house your other fish in. If you are unable to do that at this time (and in this economy) You will really need to watch your water parameters closely using a liquid test kit.
As far as cycling if you haven't already done that there is an article on here about it! It's very informative. I copied the fish in cycle out of this article. A Beginner's Guide to the Freshwater Aquarium Cycle
Read more: http://www.tropicalfishkeeping.com/f...0/#ixzz0yZuGQ9
The "Fish In" Cycle
This is the least-preferred method of cycling. Essentially, it involves using live fish as your ammonia source. The benefit to this method is that you get to stock the tank immediately, but the problems associated with this method far outweigh that single benefit. Fish recommended for the "fish-in" cycle
are usually hardy species but aren't always fish that you want to keep in your tank on a long-term basis so you have to deal with the hassle of removing them once the cycle
is complete. Second, water changes must be performed on a regular basis (sometimes daily or even more often) in order to keep ammonia and nitrite levels low so that the fish you're using to cycle
don't die. Finally, and most importantly, cycling with fish can be stressful or even deadly to the fish you're using to cycle
. Unfortunately, many new aquarists are unaware of the aquarium cycle
or its importance and are thus essentially forced to do a "fish-in" cycle
. When using this method, you should only choose hardy species (zebra danios are a popular choice) in small numbers. Monitor ammonia and nitrite levels daily, performing water changes with a good water conditioner that neutralizes ammonia and nitrite (Seachem's Prime is a good choice) whenever ammonia or nitrite levels exceed 0.5 ppm (0.25ppm is an even safer number). After a few days the ammonia should spike. As the Nitrosomonas bacteria increase in number the ammonia level will start to peter out, replaced by nitrite. The Nitrospira bacteria will then start to grow but since these reproduce more slowly than Nitrosomonas, the nitrite portion of the cycle
can take a deal longer than the ammonia portion. Eventually both ammonia and nitrite will continually test at 0 ppm and you'll start seeing a reading for nitrate. At this point the cycle
is complete. It's usually best to wait a bit just to make sure there aren't any straggling ammonia or nitrite spikes but after some time you can begin adding more fish to the tank, a few fish every week or two until the tank is stocked. The most important part of the "fish-in" cycle
are the ammonia and nitrite tests and the water changes that are needed whenever these readings rear their ugly heads.
Read more: http://www.tropicalfishkeeping.com/f...#ixzz0yZw8qAFu
It also has an article on a planted tank (don't know what you have going on in your tank) but a planted tank will help eat up some of the ammonia/ammonium and nitrite. Plus it offers your fish hiding places within the tank.
Good luck with everything!