Any skimmer other then a pinwheel requires pumps that can take back pressure and produce higher PSI. The best PSI producing pump on the market are the Iwaki's. Matt, nope, full throttle. I've used or had contact with well over 40 of those as the store I worked at blew them out the door cheaply. For what they move, they produce more heat then other pumps IMO. Mags can be run external, he will still get dissepated. Mags aren't a heavy PSI producer and aren't the best for sklimmers, great return pumps though, got many of them. Matt''s right about smaller Dolphin pumps not liking back pressure, but they're external line of pumps are highly effiecent. They're best suited for returns or closed loops. They, however, do produce some larger models that can handle back pressure, most can't utilize a 1 hp pump though I have to disagree with Matt on pinwheels being quiter per se. I found my larger pinwheel skimmer was just a load as my Becket (Becket with muffler is quieter), a little quieter then my downdraft, but my Aqua C EV was quieter then all of them. The Euroreef I have has 2 pumps attached to it, they produce some pretty loud vibrations. I'm not familiar with the Fug set-up your talking about, I've never bought a premade fug, I've always DIY'd them. Its just a tank that has some dividers, a couple bulkheads and some lights. Custom ones can be had for cheaper then premade ones. PM me Tank, acrylic or glass? Your best bet would to buy local, shipping will kill you on the tank. Tru Vu is just across the San Mateo brige from me, in Hayward. If your looking for an acrylic, pm me. With a 4 foot tank, the stand is going to be kinda packed with gear. Is it possiable for you to have another tank beside you display, for a fug?