First --- welcome to the forum!
Next ---- stay out of that pool store! They are compounding your problems by having you add all these things. With a CYA of 150 (assuming that is even right since most tests can't differentiate past 100), you don't have anywhere near enough chlorine in your pool. Higher CYA requires higher chlorine. (Take a look at the Best Guess Chart linked in my signature below.) Tell hubby not to put any more tabs in your floater. Those tabs are trichlor and are adding more and more CYA and yours is already WAY too high!
You have two choices.
1. Run higher than normal chlorine levels per the Best Guess chart.
2. Do a partial drain and refill and try to lower that CYA level to something more manageable. Do NOT totally drain your pool however as it can pop out of the ground, especially if you live someplace with a high water table. You can probably safely drain 1/2 to 2/3 of your water. Sometimes if the CYA is really high, it takes a couple of partial drains and refills to get the CYA level under control. This is a large volume pool. You may not want to have that expense of more water. Your call. (If it were my pool, I would do the partial drain and refill.)
Regardless of which option you choose, no more trichlor pucks, nor dichlor powder for this pool. Use regular bleach or liquid chlorine for your pool. Depending on what your calcium hardness reading is (not listed above), cal-hypo may be an option.
Get a good test kit so you don't have to depend on a pool store. We recommend the Taylor K-2006 or 2006C. If you order it from Amazon through the link in my signature line, the Pool Forum makes a little money.
Also, read on our sister site --- Pool Solutions. (Again, link is below.)
Let us know which option you want to do and then somebody here can help you get this pool under control!
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