I'm a newbie to this great site, good job folks. Just completed construction on an IG gunite pool with Krystal Krete Blue Quartz finish. The picture below shows the mottled appearance that became evident as soon as the pool water cleared. My PB is one of the most reputable in the region, and they advised during the process that they used "the best" sub crew on the finish application. I was present during much of it, and it was clearly a crew that had their act together. Each man had a specialty or area they focused on. The actual finish texture and shape is exemplary. Application took about 5 hours, fill began two hours after completion, and took 24 hours to fill. The mottled finish is throughout the pool, deep end bottom and shallow sides. Note that different workers worked on different areas, and the result was similar throughout. The dark areas appear to be the proper color of the quartz.
Temperatures and weather was about perfect during and after the plaster application. The PB does not seem to have an answer for why this occurred, and suggests it will improve with time.....probably. They tend to think it is the fat of the plaster giving the white spots. Options they have offered included lowering the ph dramatically with optional circulation equipment for a few days, or draining and doing an acid wash. The PB also claims very few past problems with this specific finish.
I am brushing daily, and if anything the distinction between the shades is more noticeable. One independent expert I contacted thought my fill tap water may not have been quite right. I have no solid information on any calcium chloride use, but the PB commented that they should not have used any considering the mild weather.
Any suggestions on what happened, and what to do next? Sure hate to dump the crystal clear water for an acid wash.