An interesting post was added to my thread on lowering pH and TA, having to do with the addition of sulfates in the water as being harmful to plaster and grout as opposed to using MA. I have never run across this before, and have been using sodium bisulphate for 25 years (and still had the original plaster until I recently renovated). So many companies and pool professionals seem to recommend the use of dry acid over MA, which is probably how I got started with it. Is this something to be really concerned about? I certainly have been using alot of acid since the renovation (about 25 pounds of Lo N Slo so far). Hopefully once the plaster cures I won't be needing to make excessive pH adjustments.
Thanks for any thoughts.