dragon3725
Reefing newb
I am looking to upgrade my filters and skimmer, still new at this so was looking at a canister filter and a threestage external filter? I dont really know what either are or if i need both?, if they are the same thing?, if one cancels out the other?, if one or the other works as a skimmer as well? Any info anyone could shed on the subject would be greatly appreciated...:frustrat: