Have you ever seen brown or green goo floating on a river or in the ocean? Or have you noticed how the walls of a fish tank sometimes turn green and slimy? These are all examples of algae—but there is ...

Also known as yellow algae, it can actually be yellow, green, or even brown. While it may take multiple shocks, and a bit more of a hassle, your pool will be good as new in no time. Here are the ...