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Thread: Fluidized sand bed filters

  1. #1

    Join Date
    Dec 2009
    Posts
    115

    Fluidized sand bed filters

    Anyone have any real information on them. Concept sounds plausable. While from what I gather probably not as good as an algae scrubber in many respects but they seem dead simple. Want to know what anyones experience or knowledge is on these devices.

  2. #2

    Re: Fluidized sand bed filters

    There a bit like a the next step in efficiency from bio-balls so will produce NO3 way too quickly for a tank to cope with really... Not a big fan. Suppose there ok on heavily stocked fish systems.

  3. #3

    Join Date
    Aug 2010
    Location
    indonesia
    Posts
    122

    Re: Fluidized sand bed filters

    what..?! fluidized sand bed make NO3..? seriously? then, i hv to get rid of it

  4. #4

    Join Date
    Mar 2012
    Location
    canada
    Posts
    67
    Not really what you want on a reef, but they are pretty much sovereign on big fish-only systems, especially freshwater. A pool filter sized one can easily handle 120,000 liters. (that's about dishwasher sized).

  5. #5

    Join Date
    Aug 2011
    Location
    Galveston Texas, USA
    Posts
    236
    They work great for what they do, they are just limited. They provide an amazing amount of aerobic biological filtration, so they can quickly convert ammonia to nitrite then to nitrate, quickly reducing toxic nitrogenous waste products to much less toxic ones. However they have no anerobic biological filtration, so while they dont produce nitrates, they also dont remove them like a scrubber does.

    This works great in heavily stocked tanks that are prone to big spikes in ammonia (IE if you feed a heavily stocked tank large amounts once a day). These can be ok if the livestock is all vertebrate based (fish) that can safely handle higher concentrations of nitrates in the water. This allows you to let the nitrates build up to reasonably high levels then do large water changes.

    They can also work pretty well when combined with deep sand beds in large heavily stocked systems.

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