Call the pool people and tell them NOT to come!! You do NOT need to change your sand. As Peekaboo said above, get the cl up to 20 and try and hold it there. The more times per day that you can test and hit it with bleach again, the faster this will clear. In your pool, each gallon of 6% bleach will raise the cl by 3ppm. Everytime you test, add however much bleach you need to get back to 20. When you get to the point where you can go from sundown to sunup without losing more than 1ppm of cl, then you can let your cl drift back down to between 5-10. NEVER let it go below 5 or you'll have algae again, though.

Take care of the algae problem first and then we can help you with the high alk problem.

You need a good kit. Take a look at this thread for more info on getting a Taylor K-2006. You need it and it will make taking care of your pool so much easier.

http://www.poolforum.com/pf2/showthread.php?t=10006


BTW -- Welcome to the forum. Glad you found us!