we’ve discovered our ‘own’ way of getting the silicon off, which is using ironically, glass cleaner. Spray it on, let it set for 10 minutes, go at it with a razor blade (doesn’t matter if it’s a brand new blade or not) and it’s gone.
I’m going to put the rest of our ‘methods’ below for anyone else who may find theirselves doing a entire tank breakdown.
During the initial process of breaking the tank down, we found ourselves really struggling to get a blade in the exterior seam (and chipped the glass in all 6-7 times in various spots) before we got a method that worked. He liked started in the corners (my dad) but I liked finding a spot where the razor decides to go in easier, and we just work it in a little bit, and (don’t cringe) got a hammer, and ever so lightly tap it in. Once that razor is in, do not take it back out or you will lose the ever so slight gap you created. Get a new razor, and do the same next to the razor you just started. We did this around 4 times before we could (safely) slip a putty knife in, then start reusing the blades we had in. (If they don’t easily pull out, use a different blade, like jenga but more expensive.)
When you get to the end of the specific seam you’re working on, moving the putty knife down (not too much force!) should allow that last inch or so of silicon to go ‘voop’ and let go.
(we turned the tank upside down and did the bottom first. After the bottom was off, we clamped and the side panes together losely, and put cinderblocks with cushions between them and the tank all around it. In hindsight, with two of us was unnecessary, but better safe than sorry. We then took a long pane off because the long panes were resting on the short panes, and it would leave more integrity.)
After we took a pane off, we would set it in our spare room on a moving blanket or towel. and so far, that’s where we’re at. We have completely finished 2 panes of glass (cleaning wise). I shall update when we’re putting it together.
Edit: also, if there’s a piece of glass you chipped or something during this process, 600 grit sand paper has worked for me. (This will scratch the glass where you’re sanding)