OK, so I just received my TF-100 XL kit. I used the OTO test, 5 drops of each. The Chlorine side looked like it stayed clear & the PH looked like it was the lowest color 6.8. Do I need to do any of the other tests before trying to get the PH right. I know I am going to need to SLAM the pool as I have been fighting Algea all year so far.