DE, also called Diatomaceous Earth, are the bones of tiny anamils and algae that lived millions of year ago. It's used to coat the grids of DE filters.
The dirt is trapped in the DE on the grids and is back-washed out, similar to a sand filter. Then fresh DE is put in the skimmer and re-coats the grids. About once per month you should take your DE filter apart and clean the grids, then re-coat them with fresh DE.
DE filters are a bit more expensive but if you have to have the best water, DE is the way to go.
No
David de Sola Pool died in 1970.
David de Sola Pool was born in 1885.
Ithiel de Sola Pool was born in 1917.
Ithiel de Sola Pool died in 1984.
Firstly you find out how the DE got into the pool - must be a broken filter pad. Fix that, then vacuum the pool. No point vacuuming before you fix the filter problem, or the DE will finsih up back in the pool.
Pedro De Pool was born on February 14, 1945, in Havana, Cuba.
Check the grid and manifolds for holes or cracks.
Pedro Astacio's birth name is Pedro Julio Astacio Pura.
Charco de marea.
broken filter grid
16 ounces.