your right im sry for that, Im looking for some DIY instructions for a 55 gallon barrel fluidized bed filter, I want two barrels. one the fluidized bed filter and connect it to the second barrel making it the sump. I also wanted to know if i could use a submersible wave maker for circulation in the fluidized bed filter instead of plumbing pvc for air line and add air directly into the aquarium via air stones?