good question.
I feed OHPW using the wombaroo powder from Australia.
with THAT powder I feed 2 (TWO) gliders 1 Tablespoon.
The critterlove plus powder developed my peggy and MADE IN THE USA,
for less shipping disruptions and copy write rights calls for
1 Tablespoon for 1 glider.
My guess has always been the powder from peggy must not be in as much
of a concentrated form and therefore requires more for the same nutrients.
Send peggy a message at critterlove.com if you need any more concrete
information, she should respond.