Ok, I have just set up my pool, it holds 5,500 gallons. I have read about the 3 b's but have some questions, please bear with me because I have never owned a pool before. Where do I add the borax and baking soda and how much do I need to use? My chlorine level tested ok, but every thing else tested low or very low. I am using the test strips from wal mart. Please help.....I don't want a green pool!!