With a cya of 40, you need to shock your pool up to 15. Test it at least 3x a day and each time add enough bleach to bring the cl level back up to 15. In a pool this size, (same that I have), each quart of 6% bleach will raise your cl between 1 and 1.5 ppm. Add it slowly to the skimmer while the pump is running. Everything else looks OK. Run your pump 24/7 while you are trying to clear your pool. Hope this helps.
EDIT - after you get your pool cleared up, you'll need to maintain your cl level between 3-6 all the time or you will again, have an algae bloom.
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