I did a chemiclean treatment a week ago. Treated on Friday did 20% water change on Sunday. My problem now is extreme foaming in filter sock and skimmer. I removed filter sock yesterday but still can’t even turn skimmer on turned all the way down. I can restrict air intake to skimmer and it’s perfectly set, remove air plug and skimmer fills with foam in a few seconds. Need to get my skimmer running please help

