High pH

[smith81gigem]

So, to lower the pH, we have purchased muriatic acid. All the directions say add a 'little' at a time, but no ratio. So - 1/4 cup? And aerate to lower alkalinity also, or not?

We're looking for the best solution. Last year, we poured massive amounts ($$$) of bleach in, then finally started adding dichlor, then clarifier and it finally cleared up. We did not cover the pool, so I would characterize it as a 'swamp'! We've used a Leaf Master to clear out leaves and major algae on top and bottom.

Any suggestions are HIGHLY appreciated!

[PoolDoc]

more like, 1/8 gallon. Don't try to measure it -- doing so will create too many fumes. Instead, eyeball it. With a pH of 8+ and TA of 170, 1/8 gallons, give or take, will not be too much for a 7,000 gallon pool.

Partially immerse the jug in the water, and then pour with the lip of the jug only a inch or so from the water. Doing minimizes the fumes. Only add acid when the pump is running, and wait 4 hours before retesting pH.

[CarlD]

It also minimizes the chance of acid splashing if you immerse the jug. Be sure to wear eye protection and keep the jug at arm's length.

Alternatively, I fill a 5 gal bucket with pool water, and slowly pour the acid into that. I then pour THAT into the return stream, slowly.

BTW, did you take a chlorine reading as Watermom suggested?