8 O Lord, our Lord, how excellent is thy name in all the earth! who hast set thy glory above the heavens.
Click here for the details. In swimming pools, pink slime is caused by improper water & pool maintenance, environment, poor circulation to name a few. There appears to have occurred a dramatic rise in the reported cases of pink slime especially over the past 5 to 10 years. I'll go into more depth with this comment later.
I have it too and have been trying to get rid of it. It is red slime algae. Mine formed a skin on top of the sand bed which I just finished pulling off with my hand and a scoop. I am told it is caused by too much feeding and not enough flow. Now I am working on both of those.