I've been having algae form on the walls regulary over the past couple of weeks. Went to the pool store and bought an Algecide Concentrate - dimethyl benzyl ammonium chloride (I now know that was a BIG mistake after reading this forum).

Started by adding 2 lbs of HTH shock and swim; one hour later added about 14 oz of the algaecide (recommeneded initial dosage of 5.2 oz / 10,000 gallons). This was the process recommended by the pool store. Water cleared up over the next 24 hours. 2 days later went for a swin and noticed a strong 'chlorine' like smell - sort of like choramines. Talked to the pool store and they recommended shocking again. Added 1.5 lbs of zappit last night. Current water tested tonight as follows:

SWG ~24,000 gallons in ground GUNITE / diamond brite plaster
FC 5 pmm Hardness 280 ppm
TC 5 ppm Alkalinity 135 pm
CC 0 ppm Cyanuric Acid 100 ppm
pH 7.4 Salt 3100 ppm

Still have a strong odor and can't help but think its from the algaecide as I never had this problem before nor ever used this product before. Does anyone have a theory on the cause of the smell? is the pool safe to swim? and anything i can do to get rid of the ordor? (I am considering partial draining and refilling over the next couple of days)