Join Date: Oct 2010
Location: Victoria, Australia
Well I think it depends what kind of plants you have. A single anubias isn't going to help much in terms of removing ammonia but something like a handful of duckweed will.
Mistersmum, I really recommend that you try and find test kits for at least ammonia and nitrite. These are the two that will kill your fish if they get high enough.
Your tank may be cycled or it may not be. If you periodically remove all your filter media for example, your tank is probably not going to have had a stable cycling period.
I definitely would not be adding sensitive species such as tetras or smaller corydoras until you know for certain that your tank is cycled and able to handle the bioload of these fish.
Otherwise you will just be wasting your money.