I started using the BBB method last season. I have always read to add liquid chemicals over a return in the deep end. I have two returns located in the shallow end. I always add chemicals slowly, 1/2 over each return. Immediately after the addition I brush the bottom and sides of the pool. Am I ok using this method?
The pool store always told me to add liquids while walking around the deep end. It only took 4 years to bleach the liner along the edge of the deep end. That was from constantly adding chlorine to kill algae. My CYA was through the roof for several years. Since installing a new liner last spring and following TFP recommendations, I have had no algae blooms.