Well, I spent yesterday monitoring the FC level and adding bleach throughout the day to ensure it didn't drop below shock level. I also brushed everything twice, including the ladder. To this day, I haven't seen anything that even looks like algae. My water looks very clear. Even after all that I did yesterday, I still failed the OCLT test. Is it weird though that all 4 times I have done it I miss it by 1ppm? When I do my OCLT test in the morning I do it right at daybreak, so it is light outside but the sun is not even high enough that you can see it. That wouldn't make a difference would it? The sun is not hitting the water. I'm so frustrated! I'm wondering what would it hurt to just let it be?