Hello everyone,
We have a Hayward EC65a DE filter that, for the last 2 or 3 years, seems to need to be emptied and refilled too often. We recently tried switching to fiber clear cellulose filter media, and found that the filter pressure rises in a matter of a few days, and that bumping the filter does virtually nothing. Upon disassembling the filter to clean, I noticed that almost all of the cellulose material was up in the top of the filter. The outer surface of the media was green, of course, but after breaking up the chunks, it became pretty clear that the previous bumpings didn't do anything, as just under the surface of all of the media was perfectly clean. It seems that, rather than coating the grids, the media just rises right up to the top of the filter, bridges the grids, and stays there until it is disassembled and cleaned.
We have soaked the grids in acid and in TSP to try to clean the grids, and it has made no difference.
Is there anything I can do to fix this, or am I simply going to have to switch back to the DE, even though it still basically does the same thing? Any tips are welcome.