Hey guys, I just picked up a IM 20 gallon AIO tank second hand. After getting it home I realized that the leveling mat has rubbed off at 3 of the corners. Wondering if anyone had any advice on what to do. Is it safe to fill like this, would you scrape the whole mat of and replace it, can I put a similar material on the corners where the old mat is missing, or should I scrap it for a new tank? Thanks for the help!