So I thought I knew how to properly backwash my DE filter but then a guy at the pool store told me to do this:
Backwash - Filter - Backwash - Rinse - Filter
What is the proper sequence of operations for backwashing?
He also told me I only add 1/2 the DE stated on the filter after the initial fill (i.e. when you open you put in the full amount, after that only 1/2 after each backwash). Is that true???