That one isn't so impressive. Guy doesn't even use a quality silicone. GE I and II are sealants, not an adhesives. They are not designed to hold a tank together or prevent leaks. Using GE I or II to prevent leaks is just a bad practice.
+1 patching tanks works for some people, but with a tank thats already had the primary seal sloppily redone once, its a total teardown situation, especially with a tank that big. I fail to see how thats bad info at all. More tedious, time consuming but ultimately more thorough than patching? Sure. Bad info, not in the least.You've put band aids over wounds that require stitches. It may hold for a long time but its far from the best solution, especially in a situation like this. As OP said, the previous owner already attempted to reseal the tank once by tanking it apart and from the sound of it butchered it. While it could just be a leak it could also be a panel about to fall off. Not a chance I'd trust it
Please tell us all what the proper silicone is. LOL!Does not mean that it is the best course of action. It just means people are lazy and cheap. Rather than find the proper silicone that HD or Lowe's does not carry people take the easy path. It's kind of like bad information on the internet, just because it is there does not mean it is the best choice.
Thanks for all the info. I'll have to do some research on the glass euro bracing before making a decision on how to proceed.It is possible to get the frame off without damage, it will take a good amount of work though. If you slip a razor up under the frame on both sides and cut the silicone it should be possible to eventually wiggle off. Most people end up cutting them apart to save time. If that is easier you may be able to order a replacement from the manufacturer.
As for resealing while it is still together, not a good idea. You cannot get the silicone between the glass where it needs to be or the glass cleaned properly. In the end you would just be going through this again.
As for if the frame is necessary, yes it is. You can replace it with glass euro bracing if you wish though