I have a Quad DE100. I am using DE from HTH which comes in a 25lb box. The box recommends 3 1lb coffee cans for every 10 sq ft of filter so that's 30 cans total. I stuck to the filter manual recommendations and only put in 20 cans which should be 10 pounds. So I should have 15 pounds of DE left but I knew immediately that was not the case, I had about 5 pounds left. I am sure I counted the cans correctly and the package was unopened.
Has anyone else encountered this with the HTH DE from Home Depot?
If I had followed the HTH directions I would have put the entire (supposedly 25lb box) into the filter. I just disassembled and cleaned the grids (start-up plaster dust) so I put the remaining 5 pounds in and need to get some more DE. I am off to the store. The whole thing just seems weird, usually prepackaged manufactured materials are darn close to the indicated size/volume/weight.