Tmore,

Your dimensions indicate a roughly 18,500 gallons pool.

Your analysis says you need more bleach, and more CYA.

You need at least 5 gallons of bleach to bring the Cl up to 5 ppm

The CYA reading of 8 from the pool store needs to be increased to at least 40 - 50 ppm. About 7 lbs is needed, but I would add no more than 2 lbs. at a time, and check your figures again.

BTW, the reading of 8 ppm from the pool store could only be achieved by Superman. Get yourself a good test kit, either a Taylor 2006, or even better order Ben's kit. Go to poolsolutions.com for that and scroll down to order the PS234. The test kit is slow in being delivered because of demand.

Hope this helps.

Pat