For the next hour or so, I have Reef Octopus BH2000, bought it for my 56 Gallon and has been running on my 75 hanging on the back of the sump. Yesterday bought a Bubble Magus Curve 5 Skimmer and it install it after breakfast.
Currently running a SWC200 on my 75 but setting up a 180 with 55g sump. Hopefully have the new tank up in month. Recently traded my SWC extreme 160 worked great.
ATB elegance pro, had it 2 years now, it's been great except I've had the impeller replaced twice for calc build up (now I know I could have used a vinegar soak). The only reason I wouldn't get his one again is I've heard they have no more US based support.
I just set up my first 55 gallon tank. I bought a hydor slimskim. It's rated to 65 gallons. Has a 4x4 inch footprint and is about 14 inches tall. Took a while to get seasoned but it's actually working really well. I like it.
I have a 33L with 20L sump and I'm currently running a SCA-301 rated for up to a 70g tank. Works amazing on mine and love it. Best part is, it only cost $60!!!