Most concerning is FC. TFP recommends 4-6, Hayward 1-3. Pretty big difference.
CYA 70-80, Hayward 30-50
TA 60-80, Hayward 80-120
pH 7.5-7.6, Hayward 7.2-7.6 not that much different but Hayward has a wider range.
I've been trying maintain my pool with TFP's recommendations but I can't figure out why they want FC so much higher. Thoughts?