The sump was an option offered with the kit from Cadlights. I bought the tank, stand, skimmer and sump as a package. The sump is 30" x 14". It doesn't leave much room in the stand for equipment.
I put a union valve right on top of the gate valve so if it gets gunk in it, i can reach my finger in there and clean it out in a snap.
The fuge light is a clip on thing. Its never on because I need to get some macro in there. That may be a while because I don't drive.
The vent fan I custom installed. It's a Noctua 120mm cooling fan for computers, but with a fancy cabinet mounting kit. Got that from Coolerguys.com.
They sell awesome custom cooling stuffs.
This is what I came up with to divert flow from my return pump to my media reactors.
The aqualifter on the left feeds rodi water to the kalk stirrer on the far left. The aqualifter on the right feeds straight rodi into the return section.
The skimmer is awesome. I have an almost sterile tank and it pulled out that much gunk in 2 days.
And finally this is my empty fuge with my Ph probe and 2 temp probes. My float switch is on the far right corner of the return section.