Posts by new users have to be moderated (approved) before they can be seen; it's the only way I can keep forum spammers out!
Calcium + high pH = massive cloudiness! Ironically, on a vinyl pool, you NEVER needed that calcium in the first place!2week in pool:
6lbs od stabilizer
50lbs calcium chloride <= There's the problem!
16 gals of chlorine
1gal of muriatic acid
So in other words, the pool store first CAUSED the problem, by selling you calcium, then made it worse by selling you FLOC, and now wants to sell you even more stuff.
Ad this point, you need to add bleach every night to maintain chlorine, and add acid (see link in my blue signature about buying and handling muriatic acid safely) to maintain pH below 7.8.
You have way, WAY too much calcium in your pool, and need to get some of it out. And, at this point there's about ZERO chance of having it ready for well, today (the 4th of July). I'm not sure how important it is to get your pool back in service quickly. Draining and refilling would be the fastest, but ONLY IF you can fill with decent water. (Dunno what your well water is like).
Otherwise, you need to keep filtering to remove all the solids. If you have a valve between the pump and filter, throttling to SLOW water flow will INCREASE the effectiveness of your filter. If your pump is a 2 HP pump (and not a "2.0" model number) adding a valve to slow flow will REALLY help. A 2HP pump is way, WAY too big for a 120sft cartridge. Also, getting a second cartridge will help, so you can swap them constantly, till the water is clean.
By the way, you do NOT want to lower the pH too much -- just below 8.0. The reason is, you want to filter out the excess calcium, not re-dissolve it, which can happen if you lower the pH too much.
Also, presuming the pool store recommended all these things . . . you REALLY need to stay away from them. Recommending that much calcium is unlikely to be an accident; it's more likely DELIBERATELY predatory salesmanship!
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