Howdy, we are putting in a vinyl 24,000 gal pool soon so I have been planning on doing the tfp method, but I discovered nst tablets and when I plugged in the numbers to pool math. Factoring in 6 months of open pool a year adding 1lb of cal-hypo 2x per week it would take what appears to be 10+ years before I reach 1000 CH. That's not accounting for any draining during that time. Doesn't this make sense over daily bleach addition?