I decided that 3-4 weeks of cure time was plenty and figured today was a good time to do the leak test on my tanks, prior to moving them to another storage area. After all of the extra Pro-seal that I used I really wasn't expecting to find any HOWEVER, much to my chagrin, they leaked Big Time! Both tanks had large leaks in exactly the same place.s I don't know how I could have missed getting these ealed, but it's now apparent that i didn't. the attached pics show the location. Th egood news is that it ;looks like it will be easy to fix from the outside, I've cleaned out the affected area, took th ePro-Seal out of the freezer to thaw overnight and tomorrow, i'll apply some major 'Globs' to the affected corners and then let then cure for another week, and then retest