Long story short, the sand in my filtering system was recently replaced with recycled/treated glass carrying two key maintenance instructions to comply with the manufacturer's lifetime guarantee:
1) At a minimum, backwash/rinse when originating psi increases by 8-10 psi
2) Monthly use of their eco-friendly stabilizer/water conditioner (which replaces "standard" chlorine stabilizers)
Before beginning the TFPC method conversion, I have always followed the pool supply store's cardinal rule: Weekly backwashing/rinse during the hotter months (May - October), bi-weekly during transitional months (November and April), monthly during what is typically a period of light freezing (December - March).
The idea with using the new glass media was to be able to conserve fresh water and minimize the impact of its high copper and calcium content. Would it be safe to go by the manufacturer's guidelines using the TPFC method?
Disclaimer: I am not a representative of this product, just a new TFPC convert "in process," and the first to use this line in my area.