Yeah, one of the problems with the K2006 is that it only holds enough CYA reagent for 3 or 4 tests . . . and there's not room for any more. So you'll need to order some later. They have larger bottles -- I'm not sure what people have been ordering.

But . . . you really don't need to be worrying about your CYA much, right now. You definitely don't need to test it every time.

I would lower the pH some. If you can handle muriatic acid (from Lowes, etc.) safely (glasses, gloves, don't breathe the fumes), it's the cheapest AND best way to lower pH. Probably be best to dose with pint or so at a time. If you will hold the pH around 7.0, your alkalinity will gradually decrease. (Actually it will decrease a lot at first, but if you keep holding at 7.0, it will keep going down slowly.) Alkalinity as high as you have favors algal growth, and can otherwise complicate pool care unnecessarily.

Other that that, keeping your chlorine up, and circulating 24/7 is what you need to do.

Oh, and test the calcium and report that. Unless you have a heater, it's not a big deal for liner pools, but it would still be a good idea to have some idea of where it is.