What dissolves silicone
 

I was going to use a 50 gal for my sump for my new 120 gal. However the 50 gal leaked, so I took it all apart. Just have the glass panes apart now. But was trying to get all the silicone off before resiliconeing everything back together.
I remember someone here said acetone worked. Before I go and buy any, has anyone else tried this?
BTW it sure was a pita getting all the panes apart!!!
Thanks

Rona has a silicone remover. I don't know if it works but that is what it was designed for

A razor blade and water... little elbow grease...

sorry I should have mentioned: razor blade is how I always do mine

I just had to do this a few days ago, all I used were many many razor blades, and a wire brush. I've also used a wire brush attachment on a drill before and that works great. Make sure it's perfectly clean to the glass before siliconing though so that it adheres properly.

Thats about what I have been doing, with those breakaway, olfa knives, just taking a break right now. Its the edges that I am worried about. Was going to try some sandpaper. Because of the black plastic frame, the glass has sharp edges. Not easy to clean with a knife because the edge is actually concave. But I like the steel brush idea, will try that too.
Tomorrow I will see what is left and see if I can find that remover from rona. I was at rona yesterday looking for that GE 1200 but they didn't have it.
Thanks for the info, looks like elbow grease tonight.

Best bet is to just use razor blades and brass wire brush. Chemicals can make a mess of silicone, it gets all gummy and not fun. Use acetone to clean the joint thoroughly before silicone. Hit up some glass shops or lfs to find ge cs1200