Just received my TF-Pro kit and maybe I'm holding it wrong. First test I tried was the free chlorine test. Instructions say to fill 10ml of pool water and one scoop of R-0870 power. The water turns very dark pink and takes around 90-100 drops of R-0871 to turn clear. We're new pool owners, just moved in last fall and used the company the previous owners had used for closing/opening. They opened on Thursday (24th) and put in opening chemicals (I have since learned that might not have been great). Pool store test (I also know not great, hence the kit, but was there to get a new vacuum hose) came back with 6.0ppm of free chlorine. What am I doing wrong, and thanks in advance!