Welcome! I'm looking forward to watching these plans progress; I'm a DIY-er as well, so I am always looking for ideas that I can steal and use.
I love that tank...but not too sure about the minnow trap. Is that "decor"...or are you just trying to catch some fish?
And, okay, I'll bite...in the pic of the big stand, you have some puzzling stuff going on with the 2x4's at the right side of the pic, on the end. A chunk missing from the top one...and just a short piece in the center of the bottom one. What's going on there?