I just finished filling my 16x48 Intex pool and checked the pH and alkalinity. The pH was at 8.2 yesterday but I lowered it down to about 7.5 using muriatic acid. I checked the alkalinity and it is at 60ppm. Is it ok to leave it at that level? I tested for alkalinity using the HTH 6 way test kit from Walmart. On the instructions of the test kit it says that the ideal range is 60-120ppm but I have seen some videos on youtube and some people say the ideal range is 80-120ppm.