Swampman
Aquarium Advice Activist
Hi I have a 20 gal tank that has been up for 4 years. right now there is only a horse face loach and a red dwarf place. Lots of plants. My Nitrate is very high. Amonia is goo and so is nitrites. Can't figure out why the Nitrates are so high. There is double hang on back filters. Water is changed 7-10 days. I was changing it every 5 days to see if I can get it lower. did not work. this has been going on since May 2023. I thought it was because I take the filter out a squeeze stout a bit. So I stopped doing that. Anyone else have problems such like this?