Bug populations vary a lot from year to year.

I've run into this with commercial pool customers, where they will experience some sort of bug population explosion that covers the pool -- I can remember a couple of cases with some sort of midge like flyers -- and the pool person on the community board will be all, "Well this hasn't happened before; something must be wrong!" I've had to bring up on the pool deck, during the evening when these particular bugs were swarming, and let them stand there, swatting bugs, and eventually going, "What the @#$ are these things; I've never seen them before! Go ahead and show me what you have to show me, so we can get out of here!!". And, then I grin, and go, "I just did!".

I don't know that this is your case. But I do know the weather this winter has played havoc with bug populations. My wife and I walk in the Chickamauga Battlefield most evenings - have done for the past 10 years - and the ticks are totally out of control this year. We've removed as many as 50 from ourselves and our dog, during one walk!

It sounds like you may have THREE separate problems:
  1. Your filter is not working properly.
  2. You've got algae.
  3. You've got bugs.
=> You need to fix your filter -- add sand, or repair?
=> You need to kill the algae -- more chlorine! Do NOT let the levels drop!
=> You'll have to put up with the bugs, till they get through doing their thing.

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PF Pool Chart
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