This filter has been bandied about on this forum by darkydog2002 many times, and I believe he got it from Malcolm Knowles book.

In 2 of my systems I use TAB 1 to 6 but have had a tinker around tonight and replaced TAB 1 to 6 with 55kg+ and it's made an impressive difference. I wonder how the Pareto system would go by substituting the weight for TAB 1 to 6 ???

Thanks also for your input moeee, I wouldn't have tinkered had it not been for you.