Is there a better/best method for using the comparator in the k2006 kit? I ask because since I got the kit I've been testing every morning and I'm wondering about the differences in morning light's effect on the test. For the past few weeks I've thought I've seen the pH rise slowly from to 7.8/7.9 but when I tested today on a rather bright morning compared to the last few weeks, it seemed a solid 7.6. I've moved the test around at eye level, facing the sun, facing away from the sun, moving under an awning, moving out from it. Truth is just not sure what the best way to perform that test is. Any advice that doesn't involve buying one of the Gepe lights I see in the Taylor videos?