Going to try to add a quick little video of my system here, lets see if it goes according to plan
http://youtu.be/gwaspDNGIKo
Cool, sorry for the quality. Its my first time uploading through my phone. So the tank is obviously a little crowded, but everyone including the corals are happy. The small amount of cyano in the tank is from a few issues, D/i resin is spent so I'm starting to get 1-2 ppm which I need to swap out before next water change.
The frag tank is obviously only been running for two weeks now, so its going to go through the cyan/diatom/GHA/ phases, and hopefully it don't pollute the display too much. The rock thats in the frag tank has been in my system for close to a year. Theres an MP10 on lagoon mode in the 20l. Please ignore the DIY hodgepodge light, its only up for a few more days until the reefbreeders bridgeluxe color fixture arrives. You can also see the overflow box I built out of acrylic, single 1" drain (running a very low turnover rate, really through the entire system which is solely powered by an eheim 1262 still)
next up is the refugium, soon to be replaced with the Algae turf scrubber. Theres not much to see here
Then the control area, which houses the Co2 tank for Ca rx, and my Avast media reactor housing 1/2 cup GFO on the bottom and 1 cup of rox.8 carbon changed monthly, sooner if I feel it's necessary. You also see filter socks; they are there for cleaning time, and if theres a chance of me moving things around, each part of the system has its own return area in the sump with a dedicated sock. For instance when the frag tank starts building any nuisance algaes, ill toss in the sock to hopefully prevent anything large from escaping and seeding itself elsewhere, like the display.
The avast skimmer rocks. This is literally two days after being tied in to the system, and I've already emptied the cup twice from half. It is running in recirc mode, being fed by the return. The air silencer could be a little quieter on the skimmer, but overall the whole setup is surprisingly quiet. the display in my livingroom is now much quieter that everything is out from underneath the stand.
Then theres the sump and calcium reactor. I guess its all pretty straight forward. I tried to build this to be as efficent and simple to work on/maintain as possible. So far has proved 10x easier than working under the stand. I also added about 25 additional gallons to the system, and about 15 gallons worth of extra real estate in the sump for whatever reason would necessitate it! Thanks for looking!