After a two week vacation we came home to a very cloudy pool. I took a water sample to the pool store a day ago and it was calculated. I needed pool stabilizer and GLB Super Sonic. Followed instructions and pool is still cloudy. I can barely see the bottom at the shallow end. Polaris is running. There is still froth on the top of the pool and clarity is a bit better. Any suggestions. Inground pool. 20X40.