Now is the right time to do something about the affected grouting in your pool, which can be caused by time factors or low quality of the water over a longer period.
Especially now many pools are low on Alkalinity and low PH, these results to eaten up the grouting, as far as even loosing tiles!
Maybe your grouting is a bit ugly because it got greenish, due to usage of Copper Sulfate, which is highly poisonous!
We wash your pool down with acid; clean it with high pressure equipment, and giving it a high quality regrouting, using WEBER COLOR PREMIUM, to last many years again!!
Hans Zitz 646 581 740