Well, ran into a little issue... while I was filling the REEFER 250, I noticed that the main drain line was leaking. I tried to tighten the top, it was good. I noticed the leak was coming from the junction/connector that connects the main drain to the flow regulator. I removed the regulator and noticed that the thread from the main drain plumbing was broken!
I contacted RED SEA and hopefully I can get a replacement asap.
As of now, I have a mp10 circulating the main tank water....
And a return pump circulating the sump respectively. I've added MacBac, ammonia, live rock, rock from my first tank, and filters to help with the cycle.
Here's some pictures: