This is the one I used when I had my guy in a aquarium. https://www.amazon.com/gp/aw/d/B07ZR3G275/ref=sspa_mw_detail_2?ie=UTF8&psc=1&sp_csd=d2lkZ2V0TmFtZT1zcF9waG9uZV9kZXRhaWwp13NParams&th=1