Got it. Thank you! Since it is brand new sand do you think I even need DE at this time or just let the filter do it's job?Don't backwash too often.. Sand filters work better when they are slightly dirty. 25% increase in pressure is when you need to backwash.
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I won't! My arms are killing me. I was up at 5 am brushing the pool. What a good work out!!!!And don't forget the brushing as well - its really important!