I removed mine yesterday, should be easy, get a 1 by 4 wood, try to insert between the inner side of the clamp and tank, it kind of hard but doable try to insert at an angle until the wood is flat to the tank, now move the wood up to top of the tank touching the trim this expands the clip, now it just comes off, its easy once you get the wood inbetween all the way, also you might need a smaller/bigger wood depending on trim side but 1 inch worked fine on regular black aqueon trim tank, wood doesn't scratch glass, you could use a microfiber cloth around the wood for acrylic tanks.