mechanical filters dont remove nearly as much gunk as a skimmer so IMO use one on every SW setup, yeah their not required, and yeah everyone has a friend or has a tank without one... heck i have a tank without one but it was specifically designed not to have one since it's a nano
on a FOWLR the mechanical bio-wheel filter can help keep the water clearer but the skimmer will get the gunk out of your water so if it were my setup, i'd buy a cheap skimmer and use it, as before mentioned the coralife's work great for a sub $200 skimmer or you can break into a ASM for around 235ish that would do a even better job and have easier maintence since that is the only complaint I have with my coralife that cleaning the collection cup is a pain in the rear since the big O ring has a tendency to get blown off when you remove the collection cup, the ASM's you just do a 1/8 twist and the poopcup is off and no headaches just a god awful stench lol
Also best of luck on this setup I had a friend try a huma huma and a dogface not long ago, didn't end well for the dog face unfortunatly then he replaced the dogface with a large panther grouper and the trigger ended up dead... anyway each fish is different so just wanted to say best of luck on whatever you decide with this setup and remember the pics! _________ 
24G JBJ Nano, 20# Live Sand, 40# Live Rock
Rose BTA, Kenya Tree, Frogspawn, Xenia, Shrooms, Green Candy Cane, Duncans
Blue/Green Chromis, 2x Black & White Percs, Dragon Goby, Six Line Wrasse, Mandarin Dragonette
58G Oceanic, 60# LS, 60 LR, Lots of goodies 
Up and coming 90g stay tuned |