Well I finally got around to resealing that 75 gallon elephant that's been living in our bedroom. My fingers are crossed that I did it right! It ended up taking almost 12 oz of silicon. I make a little angle trowel out of a piece of plastic that worked really great. When any of you have resealed a tank, do you fill it up all the way or go like 1/4 1/2 etc. Also, how do you check for the little leaks, or does the water weight help seal anything other than major issues? I didn't actually pull the glass apart, just the exposed seal. 48 hours to wait now!