Clearing green pool?

So I m trying to figure out what I m doing wrong to clear my pool. I shocked it once and it did nothing so I tried adding the phosphate remover and then reshocking again but it s still green. When I test the water I m getting the chlorine reading between 5-10. So I know it still has a lot of chlorine. While ALK,... show more So I m trying to figure out what I m doing wrong to clear my pool. I shocked it once and it did nothing so I tried adding the phosphate remover and then reshocking again but it s still green. When I test the water I m getting the chlorine reading between 5-10. So I know it still has a lot of chlorine. While ALK, pH, and CyA are so low that they are not even registering when I test the water. What is the next step. I ve never had an issue with keeping my pool blue until this year.
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