1. Serious gallon calculation error:

24 round AG pool, 54" walls, 3.9' water depth:
12*12 (diam) *3.14 (pi) * 3.9 ft of water * 7.46 gallons/cft = 13,155 gal

2. Do NOT worry about alkalinity . . . till everything else is fixed.

3. Add one box of borax daily -- slowly, to the skimmer, with the pump running -- till the pH is > 7.2

4. Add (4) gallons of plain 8.% household bleach EACH evening. Brush the pool after.

5. Once all algae is dead, drop back to 1 - 2 gallons each evening.

6. If you have a 2 speed pump, run on LO. If you have a valve downstream of the pump, thottle it, till flow has slowed by 1/2. (AG sand pool filters are usually too small for the pumps. Pushing dead algae THROUGH the filter seems to break it up into particles too fine to filter.

7. After all algae is dead, do the DE test on your sand filter: read http://pool9.net/de-test/ (Links is not live yet -- but it will be by the time your algae is dead.)

8. Order a K2006 test kit (kit links in my signature) -- you WILL need one.

9. Do NOT add any more floc or other mystery chemicals.


Comments: Tell your pool guy, "Thanks!". He saved your liner for you!

Questions:
1. What is the make / model of filter and pump. (Model of pump, NOT motor, is usually on the wet end of the pump.)

2. What is the brand and product name of the floc used?

3. How are you testing?