Tanks are Leak Free!

I came out early this morning and the water level had dropped nearly 4" which is exactly as calculated for a nearly 10º drop (I was more precise than that, but that's not important).  I can now claim the tanks are leak free!  I'm really glad that's over with and there are no leaks.  The tanks weren't especially hard to build, nor was the tank sealant nearly as bad to work with as I had heard.  I was more concerned that if I had a leak, I might have to open the tanks back up to fix it (requiring cutting access holes in the back baffle).