Sand vs Glass Pool Filters

This is an image of a sand pool filter.Sand:
Filter sand has always been the go to filter for quite some time. It gets the job done when it comes to filtering your pool. The most common type of sand is 20-grade silica sand, meaning this type of sand can filter particles as small as 20 microns. Sand has jagged edges that are able to trap the particles from the water as the water is filtered through the sand.

Filter glass has all of the characteristics sand has, plus more. Glass, in its most common form, can filter down to 9 microns. Unlike sand having jagged edges to trap particles, glass has a negative charge on the surface, which is able to attract the finest of particles.

Sand vs. Glass
When comparing sand and glass, know that the way they look and feel are very similar. When one hears filter glass, they tend to think shards of glass that could be harmful if touched or stepped on, this is not the case. Filter glass looks and feels just like filter sand.

When it comes to the maintenance of your filter and filter media, having glass as your filter media will reduce your back-washing time by a significant amount. This is because of the difference in build up of particles compared to sand. Sands particles clog and accumulate towards the top 6 inches of the sand. In comparison to glass, the filtration and build up of particles take place throughout the entire bed of glass, for better filtration.

Here at HotSpring Spas & Pool Tables 2, we say the proof is in the numbers. Filter glass filters particles as small as 9 microns, compared to sand filtering particles the size of 20 microns. Who wouldn’t want the best filter media to filter the teeny tiny particles, leaving you with the cleanest pool on the block?

Note: Many filters can take sand, glass, or any type of filter media. Be sure to ask your sales person if this is possible and if it effects your pool or filter’s warranty.

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