At what brix do you use your orlon filter?

[Fun4stuff]

I’ve seen some sources for temperature, but I’m wondering what brix is best.

[buck3m]

I filter finished syrup, about 66.5 Brix. That's because bringing it to boil again after filtering will create more sugar sand.

[BCPP]

I filter finished syrup, about 66.5 Brix. That's because bringing it to boil again after filtering will create more sugar sand.
I do the same orlon over top of felt filter