pool sand filter?

[Coyle]

does anyone know if these can be converted to be used as a sort of fluidized bed/ denitrifying factory? i am interested in trying it, so if anyone has any information pertaining to this, let me know.

here's a pic, for reference of what i am refering to.

 

[Cody Ray]

I heard on one reefkeeper that used one of thoughs as a phosphate reactor (his system was massive).

 

[sagekoala]

a lot of the big box pet stores use these for their carbon. I can tell you that it is not very fun to change the media in these. You have to use a shop vac to get it out. so you have to fit your arm plus a vacum hose through that tiny opening in the top.

i don't think your could get enough flow through that to get anything fluidized... and i don't know what to think of it in a denitrifying system. Perhaps sulfur based but thats the only was i can think of pulling it off.