When I went to clean my skimmer box I noticed a large number of small
wriggly black larvae attached to the pump intake. It is a slotted piece of
PVC pipe. I am using a Sequence 5800, a 5800 GPH pump. I see them both at
the intake area and attached to the strainer in the priming pot. Some hold!
Do you think these are leech larvae? Any other ideas?

Thanks,
Tim