Its just my 3rd fill of my new tub,arctic spa onzen(swg).Ive been baffled by chlorine production and readings with this fill,the only thing I did different was alot more super shocking with arctic spa stabilizing chlorine gradules(boost),I have a color q test kit,very accurate,but was never testing CYA
It was with these test strip that got me thinking about CYA because the color of the stabilizer section was very high 150 to 300 PPM range
The bottle of boost lists CYA in its ingredients,I think my SWG has a hard time producing Chlorine with such high CYA readings,which causes me to put more boost chlorine in it and the cycle continues.
Am I going in the right direction here,kinda new at this,the SWG is an amazing producer of chlorine when the water is new but drops off as the water gets older and I think because of this CYA thing!!!!!!!!!!!!!!!!!!!!!!