water quality

Hey, I'm new to this forum and recently got eight neon tetras and had the recruit mistake of releasing them immediately into my tank after letting them rest on top of the water for about five minutes. I'm quite sure my ammonia, nitrates and nitrites are low. (If this can aid in helping me I have...

Hello~ I'm new here and fairly new to fish keeping in general and I am concerned about the how my filter is affecting my water quality. I hope you can help me diagnose and solve the issue. To give you a bit of background. I got a 20gal tank last Thanksgiving along with LED lighting, a heater...