Zero-entry kid's splash pool. 6,400gals. Indoor. 3yr old plaster. Hpyo-cal chlorination.
Yesterday morning the pool tested high for CC (FC: 5.0, CC: 1.0, pH: 7.4, TA: 80, CH: 425, CYA: 0), so I started to super-chlorinate the pool by raising the FC to 15.0ppm (10x CC plus some room for error). After complaints from unhappy patrons about the pool's closure and 2hrs without any change (still FC:15.0, CC: 1.0), I increased the FC to 30.0ppm to ensure that the process occurred as fast as possible.
Fast forward to tonight, and the FC is 20.0 and CC, 1.5 (other chemicals the same)! How has the pool not reached breakpoint yet?!
Help desperately needed. I'm considering just drain the pool as it seems the quicker solution atm.