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When is the best time(morning or evening) to test my water chemistry? or both? How long or how much will a CYA level of 30 protect my chlorine level on a sunny day? for instance, if my level is 5 and in ideal range in the morning, will a CYA of 30 keep it in the normal range til sundown...

in the pool school section, it mentions that dichlor will raise cya quickly. how quickly? is there a chart somewhere that shows cya increase/ lb of dichlor? also i know that dichlor has copper in it, same question for copper increase/lb of dichlor??

Recently purchased a home with an existing ag pool. Previous owner left pool uncovered all winter. I followed their instructions for start up( added 40lbs of salt, shocked with 3lbs of htp super scock, then added algecide the next day). This turned the water from dark green to cloudy blue over...