Hi! I'm a new member and I hope I can learn new things so that I can help others as well. Currently, my pool's CYA is over 100 ppm and no matter how much chlorine I put in it, it just turns green again. I'm thinking of just draining the pool and then refill it and start over again. Do you think this is a good idea? I have tried letting the water evaporate but it didn't work. There is also a lot of calcium buildup above the water line, how can I remove that? I also use trichlor tablets so how can I prevent my CYA from rising so high again? Thanks