I think the plumbing is a little off. j/k Looks great. What size is it? What are you going to run for lights?
I love the pluming set-up. Where did you get that "Y" on the return?
very nice, looks like the one that was for sale on FB? with a bigger tank, going to do a floating canopy or one that sits on top?
Can I make a suggestion on your plumbing for your new tank. It looks like your return is right next to the baffle. You may want to move it so it empties on the farthest point away so your not just pushing the water into the next section that way the skimmer gets more reaction time.