This time of year in NJ the pollen is attrocious. My skimmer socks get a layer of what looks like yellow spackle paste everyday. Until the pollen falls off (and it's just starting to) I run my filter pump on High 24/7 and clear the sock every day. I'm now able to run it on low, but I haven't dared go to a timer schedule. I will, soon, but not quite yet.
If your FC is not holding then you need to shock the pool. If, however, it is holding, you may try adding PolyQuat which is both a preventative algaecide and a clarifier. You can add a few ounces or a full quart, but be forewarned: If you add a lot, like a quart, in 48 hours your FC will drop to 0 and you'll need to boost it again. It's not a problem so don't panic when it happens. You don't want to backwash during that time, either, or your PolyQuat will go down the sewer.
Good Luck!
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