The water drains to the skimmer section of my sump via spaflex.
The painted plumbing was dry and ready for the install.
And the sand was added next.
Here is a close up of the drain pipe. I saw a similar idea recently thanks to Lukinrats, and decided to give it a try with this tank. The drain has a black gutter to act as a surface overflow, and the locline hops over it currently.
After plugging in the Mag 7 to one of the new GFCI-protected waterproof outlets (that was nice to have handy), I turned on #6 on the DJ powerstation. Next I opened the ballvalve slightly.
I had to add another 20g of saltwater to my sump as well.
Here you can see the water coming out of the anti-siphon hole.
Water was added to the tank in a vase standing on a plastic bag to keep the sand from being disturbed.
I totally forgot to add the Durso on the other side of the wall, but that was corrected easily enough.