And it's plumbed and tested to be leak free and quiet! Can't wait to get saltwater in this thing instead of just RO/DI water; I'm still waiting for my rock to finish curing. After getting everything ready to go, all I have to say is this sump that comes with the red sea reefer 250 is SMALL! And I hate power bricks. Manufacturers need to figure out a solution to this. I've never had a sump before, but i feel real cramped with everything in there. Maybe I just went overboard. Going to be interesting servicing the dual BRS reactor. Thinking I should have just gone with a single and put GFO/carbon in the same reactor. I used lots of velcro for everything and added a network cable management channel to clean up all the wiring. Doubles as a nice drip loop too. I probably need to spend some time to clean up some of the cabling better though. I also stole someone's idea of using tape LED lighting to put around the top of the cabinet so I could actually see while working. I started with a Sicce Syncra Silent 3.0, but that thing is far from silent. Ended up getting a Vectra M1 which is super silent. Got a second MP40wQD at the same time since BRS had a nano-reef.com special giving 10% rewards points instead of just 5% a couple weekends ago. Loudest thing I have are the bubbles from the skimmer. I went with a cross with 2 (soon to be 3) gate valves to feed the GFO/Cabon reactor, return line, and the fuge. Here are all the controls. Reeflink is great in terms of distance. I have it plugged directly into Ethernet in another room, and it's able to use RF for the devices just fine. 2x MP40wQD 1x Vectra M1 Tuze ATO Reef Octopus 110INT VarioS Ranco Temperature Controller I ended up just drilling holes in the ATO to make a fuge. Cut holes for the return, herbie drain (in the back - not visible) and an emergency drain (overkill for a 2.1G tank, i know). I painted the back, bottom, and backside black to cut down light to the rest of the sump area. None of the plumbing is cemented to the bulkheads, so they just slide out when I need take the fuge out. Connections are pretty snug to the bulkheads (I hope). Found a 11.5" x 11.5" x 0.5" 225-LED hydroponic grow lamp on eBay for $25. Super thin and pretty cheap. Uses about 20-Watts according to my Kill-a-Watt. Yes, I'm a little concerned with water getting on it, but we'll see how it goes. I poorly hacked a light holder with scrap acrylic pieces. I have it hooked up to a Woods digital timer to run at night from 9pm to 9am daily. Probably have another week or two before rock is cured. Ammonia is gone, nitrites are still out the roof, and nitrates are barely climbing. Did a water change a few days ago hoping that bringing down nitrites a little would help me get passed this hump, but looks like it's just going to be time that gets me there. Can't wait to aquascape!