I got a Fluval Edge 6 gallon as a hand me down from a friend. My original plans were to give it to my girlfriend, but she changed her mind. It's an aesthetically pleasing tank for an office or a living room, but not practical for a planted tank hobbyist. I ran across some other forums where they took off the top and figured I'd give it a try. I should have done it with an empty tank, but I just went to town while it had plants and substrate inside anyways. No fish or shrimp were harm in the process of removing the top.
Disclaimer: this can get dangerous with some glass chipping and cracking, DO IT YOURSELF AT YOUR OWN RISK!
What you need:
Here are the steps I took.
basically just took a razor blade and started "sawing" back and forth to cut at the glue. Once the initial razor breaks through, it gets easier.
it's a little tough at first, but once you wiggle in there enough, you just make a saw-like motion to break through the glue. Go back and forward at a flat motion, not up and down. It might start cracking due to pressure.
i found using a small hand towel helped and put less pressure on your hands.
using a putty knife can help when your hands get too tired from using the razor blades.
this is the hardest part! When you get to this point, you will be cutting through the glue and the plastic! It was pretty challenging to try to cut through the plastic part of the lid.
i found that it helps to cut along the plastic piece this way to loosen it.
once you loosen it enough, you might be able to just pull from the front to snap it off, but I didn't want to risk any cracks so I just wiggled the glass horizontally and not just pulling the glass back. This helped detach the lid.
keep wiggling it horizontally and not vertically and it'll eventually come off!
use the razor blades to remove any excess glue.
the final product! rimless 6 gallon tank!
yes I know it defeats the whole purpose of having a fluval edge, but if you were annoyed and upset with being limited with certain plants and accessibility like I was with the Edge, I think it's definitely worth removing the top, especially when the tank was free. Enjoy!