Water Change with Canadian Springs?

[anglfish]

Originally Posted by kwirky

maybe run some rowaphos or phosban for a couple days, to deal with any phosphates that might be in the water? And then just wait?

I don't seem to have phosphate in my water. strangely. I got a test and tested the water 3 days ago and it was just at 0.25 ppm.

I did a 20% water change yesterday morning. but the sand and rock still turns brown after a couple of hours of light.
will do another one in a couple of days.