cygnusecks
05-22-2006, 10:33 AM
All,
I am preparing to seal my paver deck around the pool. Yesterday I applied a solution of "Behr Concrete Etcher & Rust Remover No. 991" to my deck to clean it/dissolve efflorescence and during rinsing a good deal of it was rinsed into the pool. It took 1.75 gallons of the product to finish the job, and I figured it would lower my pH since I would guestimate maybe a 3/4 gallon probably ended up in the pool. Pool is 14k gal inground pebbletec/gunite pool.
After a few hours or cleaning up and running filter, pH tested normal at 7.6 (i.e. no change). I was a little surprised. My Alk level is 100. Does this sound unreasonable that the pH wouldn't change after 3/4 gal of phosphoric acid was dumped into the pool?
The MSDS for this stuff is at
http://www.msdsvault.com/msds_customers_external.cfm?aa=261&ac=JDSF76854LKJAD8960-SFJ0-AO0GWO089887RHNFBJNAOPIGAeghPPFDHPAPOREGHAPHK&ad=pjuoikltisklJ64ujudt54768w4u5NAOPIGAiopilklfdgs iihreg954&ab=991
It is 30-60% Phosphoric acid.
I am preparing to seal my paver deck around the pool. Yesterday I applied a solution of "Behr Concrete Etcher & Rust Remover No. 991" to my deck to clean it/dissolve efflorescence and during rinsing a good deal of it was rinsed into the pool. It took 1.75 gallons of the product to finish the job, and I figured it would lower my pH since I would guestimate maybe a 3/4 gallon probably ended up in the pool. Pool is 14k gal inground pebbletec/gunite pool.
After a few hours or cleaning up and running filter, pH tested normal at 7.6 (i.e. no change). I was a little surprised. My Alk level is 100. Does this sound unreasonable that the pH wouldn't change after 3/4 gal of phosphoric acid was dumped into the pool?
The MSDS for this stuff is at
http://www.msdsvault.com/msds_customers_external.cfm?aa=261&ac=JDSF76854LKJAD8960-SFJ0-AO0GWO089887RHNFBJNAOPIGAeghPPFDHPAPOREGHAPHK&ad=pjuoikltisklJ64ujudt54768w4u5NAOPIGAiopilklfdgs iihreg954&ab=991
It is 30-60% Phosphoric acid.