From Brisbane Downunder.

Hi and welcome to TFP! Green pools are no fun but oh so easy to fix using TFP methods. You say you have a saltwater pool. Do you have a SWG (saltwater generator)?

How does your pool look today?

Do you have a good test kit?

Here is some easy reading for you:
 
Welcome. And while so far no one has said it specifically, it sounds like you have a chlorine insufficiency. Time to read the link sent you by Texas Splash. In the meantime, pour a gallon of 10-12.5% liquid chlorine into the pool. Can't hurt while you're learning to test your water. Green is only good for currency.