To get back to the SWCG's recommended level.

This year I bought 10 bags from Lowes. Diamond Crystal brand premium pool salt.
http://www.lowes.com/pd_241333-113-8...d=10151&rpp=24
It's bigger crystal type salt versus the previous salt I bought that was very fine. Is this good/bad/indifferent? I usually put in 1 bag at a time and use the brush to move it around until it dissolves. It takes much longer to dissolve with this brand. Is it mandatory to get it all dissolved?

Thanks,
-stephen