Cyanuric Acid and Alkalinity.
I'm not sure if this has been posted elsewhere and I've read quite a few posts but not seen it mentioned.
I read a paper some time ago regarding the Total Alkalinity and Cyanuric Acid.
It stated you must use a correction factor to correctly ascertain your correct alkalinity level when taking an Alkalinity reading. When doing so the PH must be between 7.2 and 7.8.
The formulae used was..
TA - 1/3 CYA = Actual TA eg TA= 80 PPM - CYA= 75 PPM/3 80 - 25 = 55 PPM..
So if you got a reading of 80 for your ALK you would think that it was OK but according to this paper the actual reading (55 PPM) is too low and requires attention.
The reason given was that the alkalinity component of the CSI is based solely upon carbonate alkalinity and TA testing cannot distinguish cyanurates from carbonates and bicarbonates all of which make up the Alkalinity reading.
Does anybody have any thoughts on this because if your test kit measure Total Alkalinity and this statement is true then it might be something worth knowing.
The article was published in Aquatics International.