Probably a silly question, but I'll ask anyway: If you want to raise you CYA level by putting CYA in a sock and putting it in the skimmer basket... if it dissolves too slowly and you want to turn off your pump for the night, can you leave it in the skimmer and restart the pump later to finish dissolving it? What would happen if you remove it and put it back in later?
Also, my CYA level apparently went to zero over the winter. Is this possible? It was something like 50 when I closed the pool.
Any insight would be greatly appreciated.