Problems relating to pH and total alkalinity.
Increase ph, increase TA. Reduce pH, reduce TA.
pH chemistry advice and techniques for the pool.
Bulldogcoach 76


Postby Bulldogcoach 76 » Thu 27 Jun, 2013 12:01

The chlorine levels and ph levels are in the normal range. The Total Alkilinity is at the bottom range, even after putting in 25 pounds of alkalinity up. Help.

chem geek
Pool Industry Leader
Pool Industry Leader
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Joined: Thu 21 Jun, 2007 21:27
Location: San Rafael, California


Postby chem geek » Thu 27 Jun, 2013 13:43

Are you using test strips? If so, they are useless. Get yourself a proper test kit -- either the TFTestkits TF-100 or the Taylor K-2006 where the former has more volume of reagents you use the most.

25 pounds of Alkalinity Up, which by the way is just sodium bicarbonate so is identical to Arm & Hammer Baking Soda, in 18,000 gallons would raise the TA by 100 ppm. Your TA is likely now too high unless you were starting with a very low pH (< 4.5) where the TA could be have been 0 (or negative).

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