Here's some pics of what I did today. I didn't work too much on the 4000 gal, I just sanded on the outside some, but I did epoxy the inside of the 200 gal tank. I did two coats of black. Sometime this week I'll seal in the glass with silicone. I plan on doing a fill test in about two weeks time. I'll also be building a stand for it as well. Here's the pics of the 200 gal. I'll try to get some more of the 4000 this week also, but no promises.