Wanted to update...they are gone!!! Yipee

Thank you for the replies and information that they were likely temporary. I was having nightmares of having beautiful clear pool but being too grossed out to enjoy it because of an in infestation of tiny little critters!

We have gone from a cool wet spring to a warm dry summer and they have vanished without any help from me. Again thanks for the replies, this is a great resource.
Chris