Yes doing water changes. I do 5gal one week then a 10gal the next, Then back to a 5gal. And so on. I really didn't mean that my nitrates are out of control. I am at 20, on a scale of 10 - 100. That is from my "Fastest" test kit.
And, this is my water change day. I will do 5gal for evap. and...