Is there a difference between cya and isocya?


Well-known member
Jul 28, 2010
Montreal, Canada
if it's a fine powder, should I still use the sock method to introduce in the pool? or can I mix with water the put in pool, or can I simply just spread around the pool evenly?

Bama Rambler

Mod Squad
TFP Expert
LifeTime Supporter
Jun 22, 2009
SouthWest Alabama
Still put it in the sock, or since you have a cartridge filter and if you're sure you won't need to clean it for at least a week, you can pour it slowly into the skimmer.


TFP Expert
LifeTime Supporter
Apr 4, 2009
Either way you add it you should assume it is effective within 24hrs, but will not be able to confirm the level via testing for one week.

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