You will need to get your alk and ph up asap. According to the bleach calc, you will need 18 lbs of baking soda to get your alk up to 100. It will also raise your ph, but if you need to raise it more after the baking soda, then use borax. You will find the bleach calc here:

http://home.earthlink.net/%7Emwsmith...achCalc262.exe

You will need to put a sequesetering agent in the water to control the copper. You will need to find out if there is any stabalizer (cya) in the water to know where your chlorine level should be. You don't need calcium in a vinyl liner pool. So your hardness level of 30 is ok. Read a lot on the pool forum, and go to pool solutions to read about water chemistry. Welcome to the forum!