What do they call those HOB sand filters?

[lectraplayer]

What do they call those HOB filters that uses sand as the filter media? Can you still find those?

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[Andrew McFadden]

Fluidized Sand filter

 

[Mr Fisher]

"The Sandman" they are all over ebay and fairly low priced

 

[lectraplayer]

Don't those feed from the bottom up? There's one I saw as a kid that the water drained from the top down through the sand, and then it went back up through another chamber to spill into the tank.

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[Andrew McFadden]

http://www.americanaquariumproducts.com/fluidizedsandfilter.html

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[lectraplayer]

I saw that. Not what I'm talking about. I'm looking for one where the sand isn't fluidized. It's more like a "regular" sand filter as the water falls through the sand.

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[Mr Fisher]

Wardley Sandman 3 Stage System Aquarium Filter Fish Tank 5 to 15 Gal Tank | eBay

 

[lectraplayer]

The Sandman is not what I am talking about. This, the water went down through the sand and the sand itself acted as the particuiate filter as well as the biofilter as is the case with a fluidized bed filter.

 

[lectraplayer]

The Sandman is not what I am looking for. The sand did ALL the filtering as the water decended through it.