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. Should i replace the media? the sponge is not white anymore. But that could be from the carbon sitting on it.
How should i lower the ammonia now without running anything else? nitrites are 0 and nitrates are 40 ppm , but my tap has high to begin with around 30, so thats had to keep low.
Should i use a mix of distilled water to reduce nitrates in my tap? I have really no other way to get nitrate lower water, agriculture area. Unless i start collecting rain. The rain here is usually around 7.8 in PH like my tap. I thought all rain was acidic, must be not.