Review on Avanti Refillable Cartridge Housing Biopellet by Alisha Powell

I bought this for my dry sump to fill with charcoal or phosgaurd. Or anything really. Works perfect. The only thing I would recommend is to remove the grille that attaches to the bottom and top and just leave the regular slots alone as this restricts flow to some extent. I use 1" foam on the top and 1" foam on the bottom to keep it tight. BUT with charcoal pellets you don't need foam sponges if you pack them very well and then when you put them back in place you will find that NO charcoal pellets are moving. This is very important as they grind them and others into carbon. Sand. So wrap it up well enough that it makes little to no noise with a slight shake.