I've had this MVX-26 about 6 weeks now- time for a review!
It came pretty much completely assembled so all I had to do was cut some hose and connect it to the Mag12 MTC recommends. It's extremely quiet (quieter than the Reef Octopus it replaced), a surpise since the pump is very powerful and the skimmer is built like a tank-- truly it one solid piece of equipment. They use 1/4" acryllic for the body and a schedule 80 gate valve comes stock- makes it super easy to fine tune the water level. A 3/4" Mazzei injector fills the skimmer with dense fine bubbles and it also has a 90 degree effluent drain [barbed] nozzle that easily connected to the waste bucket I have set up with a float switch to kill the skimmer pump when it gets full. The skimmer output swivels 120 degrees to help fit in tight-ish spaces. It replaced a Reef Octopus XS225 space saver model no prob.
It took about 9 days to break in and even during the break in there were no micro bubbles leaking into the return section of my sump. Once the break in was over it started producing really dense foam and it's never stopped. I thought the RO skimmer was pretty good but now I know differently, and it's embarassing that I went years with totally mediocre skimming... Now, in only 6 weeks, I can see a difference in the water quality. Aside from lower nutrient levels my filter socks didn't clog in a month (wow). With the old skimmer I was lucky to get 7-10 days before they started overflowing. A while back I experimented with turning my skimmer off at night but had to stop because algae started to grow. Now it's time to revisit that idea.