Hello all, I have a question regarding backwashing my DE filter. I have a relatively small pool (~12K gal.) and a 60 sq. ft. DE filter. I believe this is a pretty large filter for the size pool that I have, but I'm assuming that's probably a good thing. Anyway, my plan is that I try to take it apart and do a full cleaning every 6 months. I've noticed that after 6 months, the pressure gauge normally has not moved up very much at all. Because of this, I have rarely backwashed the filter, thinking that I only needed to do it if the pressure is up several pounds over the 'fully-clean' setting. Is this OK, or should I be backwashing it regularly regardless of whether the pressure has risen much or not?