cya chart

[coryp]

it's been a while since i've been on, but way back, i setup my pool according to the big cya chart and always ran bout 35-40ppm cya and followed the recc FC levels. i just ran across the simplified version in the school, and it seems to show not less than 70ppm for SWG pools... i looked through the older 5 page thread about the chart, but didn't see any reasoning for this. why should the cya be double for swg pools?

school chart

 

[Richard320]

This is one of the more frequently asked questions here. Rather than wear my fingers out typing a response that may be incomplete, check out these threads.

 

[coryp]

thanks, sometimes it hard to find the right keywords to filter through everything. that helps.