The CYA doesn't go anywhere except when lost to splashout or backwashing or diluted by rain water. SWCGs just work better with the higher CYA level. Different manufacturers recommend different levels. Typically 50-80ppm.
The CYA doesn't go anywhere except when lost to splashout or backwashing or diluted by rain water. SWCGs just work better with the higher CYA level. Different manufacturers recommend different levels. Typically 50-80ppm.
Last edited by JohnT; 09-18-2007 at 10:18 PM. Reason: spelling
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