I am a newbie at the BBB method, but so far I have had much success with cleaning up my pool. However, now I am having a problem with a green tint in the deep end of the pool. I have being shocking it per the "how to shock your pool" instructions. My concern is that I am not using the correct volume for my pool. The pool store that put it in about 25 years ago (well before I owned it!) advised me that it was a 23,000 gallon pool. However, if I use the calculations on the Pool Calculator, it is closer to 30,000 gallons. Which one should I go by? It is an 18x36 grecian style inground pool, with the shallow end being about 3 1/2 ft deep and the deep end about 8 ft deep. Are my shocking efforts (and money!!) being wasted by using the pool company's advise?
Also, during the shocking process, should I vacuum and then brush (which seems to make a little more sense than brushing then vacuuming)?
Thank you so much for your help!!