EXACTLY right! :-Dpooladdict said:As far as I am aware, and some other experts will chime in, but I believe the idea is to get the granular product stuck in your filter, then slowly it is disolved and released, if you just poured it into your pool, it would continue to circulate or rest on the bottom until disolved.
Hope I am right on this.
Keep in mind that the CYA may not really dissolve completely, even if it vanishes from the sock. The CYA crystals break down into pieces small enough to get through the sock but they are often still in a very fine sand like consistency and not completely dissolved.Damian said:The movement of the water by the return normally disolves it all in around 3.5 - 4 hours.