My tank has been up and established for just about a year now and haven't had major issues with Nitrate until recently. After a water change and testing an hour later my Nitrate is still at 40PPM
After testing my tap water, it has 20PPM of Nitrate :O so I'm having a endless battle because its in my tap water. My angels gouramis are fine but have lost a molly, some neon tetras and 1 rasbora
I'm not over stocked as the issue has started about 3 weeks ago.
So what do I do? So frustrated.