A WASH????? adding a skimmer???????, WELL, I don't like to 'make waves', so , since you ARE using carbon, maybe you should AT LEAST do a charcoal drawing for me! :splitspinthat allowed me to hook up my canister and my HOB skimmer. right now I am only running mechanical filtration in the canister and still need to put in carbon...So between that and the skimmer (which has been working overtime from the move) things are great in my tank...... I'll let my two betters chime in if they want, but I think it is wash.