A 15w - 25w submersible heater can be used in this aquarium. It must be small enough to be submersed without touching the bottom, sides or any accessories in the tank.
answered 5 months, 4 weeks ago
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I'm currently using an Aqueon Submersible Aquarium Heater (50Watt, up to 20Gal). It fits nicely in the corner of my Fluval Spec V tank. It comes with direct and easy to read instructions too. Your local Petco should sell them.
I personally am very pleased with this heater, as the temperature is always consistent in the water. It also has an automatic safety shut off and overheat protection. However, just to be safe- ALWAYS be sure to buy a good submersible thermometer to compliment the heater. They are small and cheap. Don't be cheap on heaters either, that is NOT something you can afford to be frugal on.
If you already have fish in the tank, I would suggest SLOWLY raising the temperature over time to prevent shock to your fish. If not, follow the instructions and then acclimate your fish as you would usually do so by floating them on top for a bit.
A thing to consider though with the Fluval Spec V tank, is the water pump's flow. The filter is fantastic at keeping the water sparking and clear, but the flow is strong even on the lowest setting. I would not consider putting a betta fish in this tank due to the strong flow of water than can stress them out or damage their delicate, flowing fins. No fish with fins similar to a betta should be kept in this tank, in my opinion.
If it's too late and you have a betta in this tank, turn the nozzel vertically and towards the glass. This is the best you can do without having to futz with it further.
I hope this helped and good luck with your fishy friends!
answered 6 months ago
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