For awhile, you do need to test every evening while you are getting a feel for how your pool is going to behave. Each time you test, add enough bleach to get to 6ppm. If you find that by the next evening, you have dropped lower than 3ppm, take it a little higher that evening. With a CYA of 50, you never want to let the chlorine drop below 3ppm or you'll be right back where you were with algae!

I have the same size pool as you and I am to the point where I can usually test every other day and when I do, I usually add a small jug (3 quarts) of bleach. That is not a hard and fast rule and it also depends on what the weather has been like, how much swimming we have done, etc. You'll soon learn what your pool is going to need but for now, it is smart to test cl and pH every night.

By the way --- regarding the pucks ---- your CYA is great at 50. You really don't want it higher. Finish up the pucks you have in there and then no more. You'll also need to test your CYA again when the pucks are dissolved and if it is much higher, you'll need to adjust your needed chlorine levels. See the Best Guess Chlorine Chart for more about that.

Good luck and have fun swimming! We are glad you got things turned around! Be diligent about your pool chemistry so you don't have to fight this battle again.