pH above 8 15ft X 48in Intex

[BigDave]

1) Muriatic Acid(Hydrochloric Acid) is cleanest(adds nothing unwanted). Sodium Bisulfate(pool store Dry Acid) is also available and eaisier to handle and store. As your better half is a chemistry teacher would she have access to an inventory of HCl that someone else stores and maintains? It might be worth the red tape.
2) Add a little. Let it mix. Measure again. Repeat as necessary. Please review Using Muriatic Acid to Safely Lower Your Pool's pH
3) Maybe for some, but probably not for your pool. Do keep it within the range of your test so you can see it move.
4) Please see Ben's Best Guess Chart.
5) I like to add CYA with dichlor, it the fastest dissolving form of dry CYA and gives needed chlorine as well.
6) I think everyone burns through the CYA test. Cleaning a swamp will take it's toll on the chlorine tests. Hint: use a cheap OTO test for daily checking.
7) No need to pour polyquat into the pea soup. Chlorine to kill the algae then filter out the cloud.
8) Dunno. Polyquat helps keep clean water clean. Fill a floater with trichlor pucks and tie it in the center of the pool. Teach a neighbor to add bleach.

Sorry Watermom I didn't see your post when I started mine.

[Watermom]

Not a problem, Dave.

[Pappy]

Am I figuring right that one 121 ounce jug of 8.25% bleach should raise my FC by ~15 ppm? So if my FC is zero, dump a jug at sundown?

[PoolDoc]

Yeah, 15 ppm should be about right.

Regarding vacation, there are 3 possible options:

1. HiC2 => CYA > 100 ppm & FC > 20 ppm when leaving.
2. 3x doses of polyquat AND removing cartridge from filter OR bypassing sand filter (Polyquat tends to collect on the filter.)
3. Borates > 60 ppm (protects against green algae.)
4. Phosphates < 125 ppb (protects against both green and mustard algae)

Regardless, you want to be sure that your pool is very clean and algae free the week before AND that your filter is in good shape

[Pappy]

I can get Kem-Tek CYA and Clorox Polyquat 60 at the local Lowes for a kinda reasonable price. We already have several jugs of 8.25% bleach. I was thinking I'd get pool clean with bleach, then bring the cya up to 40 or so with the Kem-Tek, then, after that see what I need to do with the pH. Will it be a big problem if the pH is too high for another week or 2? How much CYA should I add to 4500 gallons at a time? I think I read wait a week between doses.

[PoolDoc]

"Clorox Polyquat 60" Clorox brand polyquat? Really? That's new.

Try to keep the pH between 7 & 8 at all times. Below 6.0, it can definitely damage your liner.

[Pappy]

http://www.lowes.com/pd_576066-1327-...ide&facetInfo=

Since I'm over 8 (unless 2" of rain lowers pH significantly) I have a little wiggle room on the lower side.

How much CYA should I add at a time?