This was my probably my reefkeeping peak circa 2015
90 gallon garden eel system
180 mixed reef
40 gallon anemone tank plumbed into main reef.
I also had a frag tank along the other wall and some qt systems. The 40 gallon tank actually leaked as it was my first homemade tank and I replaced it with my old 112g display.
Now in 2018 I've moved far away, had to give away the eels, the 180 gallon smashed, but I am setting up 90g again as a reef. I actually have 3 separate reef systems now but they are in different rooms (no basement in new house). The 112 gallon that is not pictured in this is now my thriving main display.
As fun as it is to have a wall of reefs and how nice it is not to worry so much about spills and mess, having one nice tank in your dinning room is a lot better in many ways. I see it for hours a day everyday vs an hour or 2 a day max. Also I'm not a huge fan of plumbing tanks together. In this case the anemone needed it's own space since its not fish safe so it made sense to have it plumbed into the reef, but the garden eel tank got fed like crazy so it had it's own filtration where nitrate and phosphate were not as much of a concern as a tank with hard corals in it. Once I get this 90g going again I'm not going to run it at all like my other display tank. I like to have different tanks and do things differently otherwise I might as well just have one huge tank if they are all going to be plumbed together and ran the same way.