I went through your Pool Chart data, and summarized it in your signature.

You're spinning your wheels trying to operate a 14,000 gallon pool with a 1HP pump and a 40# sand filter. Nothing we can help you do, will overcome the problem with that tiny, undersized filter! That filter would be barely adequate for a 6,000 gallon pool, but ONLY with a much smaller pump! You'd need to restrict flow to 15 GPM -- a little more than a fast garden hose.

At your current flow rates, with a 1HP pump, you are not only forcing all the dead algae THROUGH the filter, you are shredding it into pieces as it goes. So, as you filter longer, the problem gets worse instead of better!

Sorry.