- Nov 12, 2017
- 11,933
- Pool Size
- 12300
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-40
Your FC is too low. Keep it at 5 or above, do not let it get below 4, ever. An algae outbreak at day 8 would be bad. The NPC's "1.5 to 3 ppm" was for before CYA. Now that you have a CYA level of 30, follow the TFP FC/CYA chart, but ignore the Minimum of 2ppm, use the low end of the Target range (4ppm) as your minimum, a false bottom as it were, so that you have a built-in safety margin.