have you ever had the sound of glass breaking stuck in your head?

[Myka]

Ugh! I feel your pane (har har). I broke two tanks this week...luckily just a 10 and a 20.

When cutting the silicone (either to remove the overflow or remove the broken pane) use fine wire and use it like tooth floss down the seam. Cuts real well although you will probably break the wire a few times, so get lots.