You have and alge bloom that can be fixed with bleach and lots of it. Stop putting pool store chemicals especially triclor
try this forum,http://www.troublefreepools.com
Mine looked like this last year, you can get free info and expert help, they also have a link for a great test kit.
The site is the same format as this one and i find that taking care of the pool chemistry is a lot like burning with coal, a thinking persons game, once you do the reading and research and understand the chemistry it a great summer time hobby
to do the chemistry on the water.
They promote using what they call the BBB method, all common ingredients easily purchased on the cheap. Bleach, Borax, and Baking soda. You will be pleased with the site and more so with the results.