Hello all. First time poster and newer pool guy here. I recently had a well balanced pool but I had to add yellow out for the start of what I was told mustard algae (small spots of sand on the floor). I have a salt water pool and I added the yellow out and then 5 minutes later, as directed, I added 2 pounds of shock for my 20k gallon vinyl pool. I went to the pool store to get new readings today and to see what the yellow out did. Well I went from 1.0 TC and 1.0 FC to 6.6 TC and .01 FC. Yes I know I need to get my own test kit and I will. However I am being told I may be in chlorine lock. Am I over worrying here or is there something I should do? All of my other levels are in line:
The automated test they used (dip a strip and scan into a computer) says to add 16 pounds of shock. The lady at the counter told me to wait and see what happens over the next few days and to test again in a week. Any suggestions? Thanks for any insight.
Also my pool currently is crystal clear and its never been clearer.