Hi ellenicol,

Since you have brainoverload , I'll try and keep it simple

Alk range -- yours
80-120 ----50 you need to add baking soda

ph range ---yours
7.2-7.8 ----6.8 borax to raise ph

Cl @ 60 cya -- 5-10ppm youre at the bottom of good , so you need to keep
it there or higher

look for MWsmiths bleach calculator, its a great little program for figuring quantities


Ready for more thinkin yet ?

I would get baking soda in first to raise alk . It will raise the ph also , but only slightly. Using the bleach calculator I figured your 24 round at 4' so , so 6lbs of baking soda isnt bad to start. When you get the Alk right , check the ph. If its still not up to snuff , add borax, but only dump in some at a time , wait & check, so you dont over due it . when you get in range , its good.

As for Cl , the kit only tests up to 5 .you neeed to stay there or higher.. CarlD has a shot glass method around here that makes sense to me if you have to use it for testing

Trust me , once you got it down , it works and its really easier than pool store way