You didn't say have size or brand DE filter you have but usually you put in 1 lb of DE powder for every 10sq-ft of filter area. For example a 60 sq-ft filter takes 6 lbs of DE. It sounds like your not adding enough to cover the grids.
Good Luck
Re: Question about DE filter
You didn't say have size or brand DE filter you have but usually you put in 1 lb of DE powder for every 10sq-ft of filter area. For example a 60 sq-ft filter takes 6 lbs of DE. It sounds like your not adding enough to cover the grids.
Good Luck
Re: Question about DE filter
It is 24sq feet Pentair FNS plus. I have one of those 44 fluid once cups you get from a fast food joint. I had been using three cups, last night I put in five.
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