I looked those 2 filters up and they would be sufficient, barely. The 104 is rated for 125 gph while the 3 plus is 185 gph. That's 310 gph. As Nethius said, depending on what you plan to put in the tank, they may be fine. If you plan on pushing the stocking limit or having messy fish, they probably won't be enough though. If you're going with mainly small fish like tetras, you're probably ok. Upgrading to a 204 or 304 along with the 3 plus would give you ample filtration to handle a pretty good fish load.