The 25 gallon model is known as being one of the best betta fish heaters as it can heat water in small 7 gallon tanks up to 78 degrees F.
Betta fish can happily live in community tanks and many specialist aquarium stores are now displaying their betta fish in community tanks. This isn’t a hard thing to manage as betta males are actually fairly peaceful, usually only attacking other male betta or those they confuse as male betta. In fact the biggest issue with betta fish in community tanks, isnt the aggressive betta, but fin nippers and fish that are simply too fast for the slow moving and eating betta boy. Success can be found with many of the laid back tetra varieties, female guppies, and other live bearers that are different in colour to your betta. As for tank size, while your betta can survive in a 2 gallon tank, this is not a recommended healthy environment. The smallest you want to keep a Betta in would be a 5 gallon tank with partial water changes every other week. A 5 gallon tank doesn’t take up much room and is much more adaptable. You have extra space for decoration as well and you’ll have a chance to see your betta actually living instead of existing. But you wanna know the best size for a Betta? 10 gal community tanks have been shown time and time again to be the best homes for betta fish. They don’t need such frequent water changes, they can support live plants and self regulate much better than a smaller tank. Add the that all that added space that you can decorate and aquascape, 10 gal and larger really are the best choice for any loving betta owner.
@Renny: I think you are probably right that he must have collided with something. Unless he is missing scales or something I'd just let him be to heal up on his own. The best remedy for an injured fish is low stress and clean water. If he has an open wound, scrape or missing scales you may consider dosing the tank with aquarium salt for a few days.
Top 5 Best Fish Tank Heaters in 2017 - Fish Tank Club
Best Aquarium Heaters for Fish Tanks of All Sizes • Fish Supply Guide
Are you looking for the best aquarium water heater for fish tanks? Getting the best water heaters can be very challenging for you. However here is a review of the top 10 best aquarium water heaters for fish tanks in 2017, they have excellent features that will be perfect for all your needs. Have a look and choose the best for you.However, choosing the right aquarium heater isn’t always easy, and a poorly constructed one can do more damage than good. To help you with your decision, we reveal our top 5 best fish tank heaters that deliver the best quality and performance. 20 Gallon aquariums fall between small and medium tanks. While it is true they double a standard 10 gallon, they also often introduce larger rocks, more decoration and more equipment. All of these can reduce the actual water capacity, introducing a new element to the fish keeping hobby.
Still with 15 to 20 gallons of water to heat we need a bit bigger of a heater. Thankfully many of the best companies make heaters that are perfect for our 20 gallon fish tanks. I'll start off with my absolute favorite, which also happens to be the most reliable 20 gallon aquarium heater. The temperature of your fish tank is an important factor that ensures the well being and comfort of your fish. They have to rely on heaters to maintain their body temperatures as they can’t do it on their own. Part of lessening the stress that comes with hunting for an aquarium heater comes with knowing the top products in the market. For those who are on the lookout for the best aquarium heaters, we have compiled reviews of the top heaters on Amazon.