I have a 10 gallon tank that i did do a fish less cycle on, and it was done, added the betta and everything was fine for a little over a month then we started to get green algae on the sides of the tank, so i put a few plants in there, and bought a snail. I tested the water yesterday and got a .50 ppm of ammonia. Did my cycle get messed up because of adding the snail? Or the decaying plants? i cleaned them as best i could.
Also how should i clean and replace the filter media to keep the cycle going? I have the aqua clear 20 on the tank. With a sponge, carbon and biomax.
How should i lower the ammonia now without running anything else? nitrites are 0 and nitrates are a little high, but my tap has high to begin with, so thats had to keep low.