In parts 1-5, I went through the details of setting up our big 75 gallon plant tank, and described some of the plants we're keeping in it. And time for green water to jump into competition with the plants.
Green water is a term used to describe unicellular algae.
It's a problem in the tank because fish can't eat it. It was so bad that for the first week I could not see from front to back of the tank. Typical methods for dealing with green algae include starving it, keeping the tank in total darkness for several days. Another method is to use a very fine filter, such as a diatom unit or micron cartridge filter. I didn't have the luxury of either, since my tank was next to a window in the middle of summer, and I had just spent all sorts of money on fishtank stuff anyway.