Also forgot to mention if it is a sticky mat that sticks to the buttom of your tank and you already stuck it slowly pull it off start at the cord try not to bend it as much as possible try not to rip it took me about an hour or so to take mine off i also used a putty knife to start with once i got a bunch of it lifted i used my hands and very slowly pulled down and put my fingers inside the pad pushing downwards to make sure i wasnt applying to much bending you can wreck them taking them off i was so scared when i took mine off thankfully it still works just take your time