We have a problem with fine red dust in the pool that our sand filter can't seem to handle. I'd prefer not to vacuum a couple of times a week if I don't have to. Just wanted to double check that it's OK to add a cup or two of DE through the skimmer bringing the filter pressure up 1 lb. Sort of hate to do that as my pressure consistently runs 26 lbs now. (Builder who was otherwise excellent would not think of installing anything less than a 2 hp pump on a 1 1/2" system.)
I'm not overly concerned since the max. operating pressure is 50 lbs on the 325lb Pentair. If I add the DE and brush the pool regularly, is there a good chance that this will solve the problem?