Shop / Products / Marina Betta Submersible Heater Marina Marina Betta Submersible Heater Default Title $19.99 Default Title Purchase Options Free In-Store Pick Up Not Available Set your store for inventory and store pickup details Zip Code Search Same-day Delivery* No minimum charge for delivery orders. *Order before 2pm and have it delivered today. Orders placed after 2pm will be delivered the next day. Must be inside delivery radius. Zip Code Unfortunately delivery is not available to this address. In order to ensure the best availability accuracy, changing your selected store will remove all items from your cart. You will need to re-add these items with your newly selected store if you choose to continue. Continue Cancel Ship it to Me Quantity Add To Cart Information Marina Betta Heater is an automatic, submersible heater that creates ideal water conditions for bettas to thrive in. The exterior is made of durable polymer, which is more resilient than traditional glass sleeve heaters. The heater is designed to reach and maintain a set temperature—no manual adjustments required. It has a red indicator light that illuminates when the heater is working. It comes with a suction cup, so you can easily install it against the aquarium window. For aquariums up to 5 litres Customers also liked Customer Reviews