Hello, I am new to TFPC. I like the idea of moving to liquid Chlorine and want to start the process, but I would like to get the CH under control 1st if needed. This has always been high even with the new plater. We run at 600 ppm right now and having a very hard time maintaining any FC (=0), but the pool is perfectly clear. I read in one thread about using Reverse Osmosis (RO) for removing Calcium. Does this work and should I consider it. I am ordering a good test kit and want to test the inut water as well sicne I drained about 30% while brushing this spring and refilled and it does not look like any difference. Any suggestions?