I built one like this as well. The only issue is the small diameter of the drain. Good luck getting lots of whole leaf hops in there. At times, I have to use whole leaf and the small diameter makes this a real PITA.
This is still a cool solution and really nice for pellets. I'm going to look for something a bit larger, though for whole leaf hops.
On Tap: Belgian Barrel Aged Barleywine, Da Yooper's Oatmeal Stout, Breakfast Stout, Hop Your Face Off IIPA, Catcher in the Rye Saison, "Wino-head" Nelsin Sauvin Gumballhead.
Bourbon Barrel Duchesse De Bourgnone
Fermenting English Mild
on Deck: Lager?