we have had a ton of rain here in East Tennessee. I have been keeping levels around 3 with liquid store bleach, however today I noticed some algae growth behind our wedding cake stairs and around corners of the wall, Not really green algae but more yellow green. Just on floor/wall crease on one side and then around stairs....I have 0 cc, and 3 Fc, so not sure what to do. I just vacuumed it really good and cleaned all the spots that I saw. Is this a huge concern? Never had algae in the past, but we haven't had 4 inches of rain each week in the past either?