my pool went from a green swamp (matched my grass) to a crystal clear pool in less than a week. I used nothing but liquid chlorine. I kept my chlorine at the the shock level using bens best guess chart. (as well as I could) and kept my filter running 24/7. you can do it. just follow the instructions.
i had to put in over 50ltrs. of 12% sodium hypoclorite (not sure how many gallons that is). and backwashed almost every day as my filter was picking up LOTS of dead algae due to the vacumming and constant filtration. I would post before and after pics, but I cant attach pics yet
just follow the instruction watermom has been giving you and your pool will sparkle in no time!

-cheers
topher