Small tanks or fish bowls can be a real challenge to heat properly. Fortunately, there are small heaters are available in a variety of types. Check out these heaters specifically designed for mini aquariums or bowls.
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Available in 7.5 and 15-watt sizes, this flat, fully submersible heater is a great choice for a small tank. It fits flat against the side of the tank, or better yet, under the gravel bed. The price is also fairly low and the smaller version is perfect for a Betta tank or bowl.
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Zoo Med specializes in reptile needs, which require a variety of heater products. They bring that expertise to the Betta Therm, which is a flat round heater, designed specifically for the bottom of a Betta Bowl.
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Marineland makes solid products, and this one is no exception. It is a mere 5 inches long, shatterproof, preset to 78 degrees, and has an automatic safety shut-off if not submerged in water. Costs a bit more than the flat heaters, but it's a quality product.
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A relative newcomer, this pre-set heater has been well received by owners. At a mere 7.5 watts, it doesn't put out a lot of heat, but for most Betta bowls, it's perfect. The price won't destroy your bank account, either.Continue to 5 of 5 below.
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Available in 5, 10 and 20 watt versions, the Cobalt is fully submersible and shatterproof. Like other mini heaters, there are no adjustments. A bit more expensive than some models, but it also is more durable.
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