Originally Posted by misterpenguin4
Some people do remove the rims on up to 20 gallons and they are fine. The rim is mainly to hide bad glass cutting. I was also thinking about cutting out only this little lip here: just where the light would sit.
Really? Cheap rimless option. My tanks are not 100% level and I think the rim helps hide this.
Yep, that looks like a good place to cut.