Re: DE/Silica

 I recall earlier posts that said DE is used in pool filters? How does it work? Is it a filter of DE that the water passes through?

Would this work in aquariums? Do you think just adding DE to aquarium water would be beneficial?

The DE is used in DE filters that contain pads that capture the DE.  The entire pad becomes coated with a thin layer of DE that then traps algae and other particles on the pads so they are not circulated back in to the pool.

They actually do make DE filters for aquariums.  Although adding DE to the water is not going to filter the water.  You would be better off adding zeolites (aluminum silicates) to your external filter.  They are sold in aquarium stores under the name ammonia remover for about $6 a pound.