Rimless Biocube

[Kaden Obrien]

So I am currently in the process of making my 29 gallon Biocube rimless and need help. I have the rim off I just am trying to find a good way to get the silicone off

 

[Katrina71]

I have removed old silicone from windows by heating it first with a blow-dryer and used a razorblade.