The only ball I keep in a tank is a male I rescued last year, I only use tape on the lid, 2 pieces on each corner. Works for me and been like that for about a year and never had a problem but I would reccomend the clips designed for the lids. The people who originally got him as a hatchling had him with about 3 bricks on the lid and him even that small figured a way to push the lid off?