Since adding a skimmer sock about two months ago I have this jelly like substance in the sock whenever I clean it. It isn't sticky, just a clear jelly substance. Each time I clean the skimmer basket (every other day) I can get several tablespoons of this out of the sock. I'm glad it's not going into my filter whatever it is but would be interested to know what it is.
Only chemicals used in water are:
Pool Perfect once a month (remove suntan lotions)
Water test results: