Been away for awhile. Pool is still doing well. Bought some stabilizer and got the cyanuric acid level to 40. pH is steady at 7.5, alkalinity at 80. I notice that I have to add bleach every 3 to 4 days to keep the chlorine level at 1-4 ppm, is this normal? Also, with that kit, what size of spoonful are you supposed to use for the R-0870? The video they have shows a huge heaping spoonful, but I have just been filling the little scoop to the top and nothing more.