“Best of Bob Lowry #2” Bob’s Target Ranges & Recommended Free Chlorine Level

Bob Lowry thought of pool chemistry as something ever evolving. We are all slow to change, even Bob admitted to this himself. But Bob’s Target Ranges and his way of calculating the proper free chlorine reading are two things that are revolutionizing the pool industry today. He was the author of over 23 books but this has to be one of his most relevant and shortest books coming in at just 19 pages thick. But it is packed with so many essentials on residential pool chemistry that you will want ...