So am new to pools, but have read lots and lots of web pages. Mostly ask questions, but here is a ?contribution.
Had lots of tent caterpillars this year on Whidbey Island. Used to find them disgusting but after learning they are fundamental to the growth of fir forests I have changed attitudes.
At some point they enter cocoons to later become moths. Anyway...
"Opened" the pool on the fourth, was in fine shape, clear, balanced, 86°; I said "**** I am good". Grandbabies jumped in and giggled.
Shortly one grandbaby asked "grandpa, what is under the edge? That is gross." I looked, maybe a hundred tent caterpillar cocoons distributed around under the coping.
Oh well, so much for my "perfect" pool opening. So now to do there is filtration, balance, sterilization and things under the coping.