The cause of ammonia in my 20?
I cant figure this out. Ive had my 20 gallon for about 4 months and I keep getting low level signs of ammonia every two days. I have a small otto, about 40-50 cherry shrimp and around 6 baby snails which came as a surprise lol. My tank cycled about 2 months ago so I dont know what the problem is. I have a fluva 105 canister filter.. My tank is also lightly planted. Any ideas? Maybe I need to clean the canister or the tubes on my filter? Some of java moss is brown which looks like its decaying but its only a small batch so I dont think that is the cause.