mr funktastic
Aquarium Advice Addict
the second link is for inline of a cannister filter. as long as u have a cannister it will work very well. u may also consider making that rather than buying it. all it is is a peice of pvc pipe with 2 endcaps with the hose fittings. then he added a small fitting for the co2 and filled it up with bioballs. can be made for about 5 bucks fairly easily. if your not a DIY kinda guy then go for it.