Fluidized bed filter?

[raw88gt]

Hi all i see about these fluidized bed filters. Do they really work? or is just an addition to your sand bed? thanks all

 

[pfish]

Save your money. there finicky and not necessary. Get a sup with refugium and good skimmer.

 

[pfish]

Save your money. there finicky and not necessary. Get a sup with refugium and good skimmer.

 

[pfish]

thats sump, sorry for double post