high ph/ alkalinity and green pool

[vjeffcoat]

Ok great, I will go buy the 6 way drops next time i go into town.

Will just the shock and regular vacuuming/filtration get rid of the green, or will i still need to floc and vacuum to waste?

[PoolDoc]

Sorry, I'm buzzing through a bunch of posts and threads, and didn't finish yours.

To get rid of algae, you have to kill it first. To kill it you have to add enough chlorine. So, do this:

1. Start adding 4 gallons of PLAIN 6% bleach LATE each evening.
2. Add bleach and then brush immediately after the 2nd dose
3. Run your pump 24/7; only backwash when the filter pressure is up at least 4 psi over the clean pressure.
4. Continue dosing in this manner until the algae has all turned gray or brown.
5. Dose 1x after that happens; then turn pump off overnight and see if the algae will settle.
6. Maintain dark yellow to orangish yellow chlorine levels for several days after.

Let us know how it goes, so we can suggest modifications as needed. No floccing yet!

[vjeffcoat]

No need to apologize, I am just thankful for your quick response. One last question before i begin this evening. If and once the algae settles to the bottom of the pool, do i do regular vacuuming/filtration. Or is vacuuming to waste really my only option?
Again thanks so much for the help, I will let you know of the progress

[PoolDoc]

If your filter will catch the algae, it's much less wasteful to just vacuum to filter.

[aylad]

If you find that your filter isn't catching all the algae, you can try putting a little bit of DE (like they use in DE filters) in through the skimmer and let it coat the sand (just use enough to create a 1 psi rise in your pressure). That will help the sand catch smaller particles. It's a trick that the other 3 mods have all used in their filters.

[vjeffcoat]

Ok, so i added the first 4 gallons of bleach last night and when i tested the FC level this morning it said it was .5 , i know that the point of adding that much was to raise the chlorine to high levels to kill the algae. How much bleach should i add tonight?

[PoolDoc]

4 gallons each evening, till the algae is all dead.

[vjeffcoat]

Ok, progress report, I added the second batch of bleach last night.when i tested the chlorine levels this morning the TC was a 3, and the FC was a 5. I retested before adding the third batch of bleach tonight and the levels were back to what they were the morning after the first batch, TC 1 and FC .5 On a good note, the water is a much lighter green and the visibility has improved greatly. So i guess i will add the forth batch of bleach tomorrow night and see how it goes from there.