Yes, and I was adding things when I shouldn't have been, like raising CYA, lowering water, etc, Should have been SLAMING only. Actually added some ascorbic acid this afternoon for Iron stains (32oz.) , circulation on and 95% of the stains are gone in a matter of 1-2 hours. looks even better now.
They teach here on getting CYA, PH, TA and such set up then start the slam.
Now I know better. I was so frustrated I was ready to fill with dirt and plant a garden with a nice walkway around it. Glad I didn't now