I've two clearseal tank. both tank is 60cm long and 30cm depth but one of them is 45cm tall and the other one is 30cm tall. The bigger tank is made of 6mm glass and the smaller one is made of 4mm glass. Do you think it would be safe to remove the panel braces and the cross braces? If it is, how do you go about doing it? I try brute force but I wasn't sure how brute I should be before breaking the glass. Is there any other simpler method? Ideally i wanted a rimless tank but being cheap, i don't want to part with my hard earn cash. :?