Nitrate High...What to do?
I need some help. I did a water test, and my Nitrate is a bit high...the test water is purple! Isn't Nitrate supposed to be at 0??? I do regular water changes and my filter is working fine. Not too sure how to lower Nitrate...always though that was caused by fish waste and other gunk in the pond, and water changes would take care of it. But my water was crystal clear, and no gunk on bottom. What is causing the Nitrate problem?
Now I have to confess, I did something to try and fix it...not sure if it was the right thing to do. A local Koi breeder told me to put some Baking Soda in the water...1 pound. So I did, and now....3 days later, the water is cloudy, and the Nitrate is a bit lower, but still high. Should I just wait it out, or drain the water and start over?