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  1. Betta Fish Care
    I installed my heater earlier and I have two thermometers (just in case) in a 10g tank with Toby the Koi Betta. I am using a 50w heater set at 78 and the thermometers are saying the temp of my room (66-68). The heater has been in for about 30 minutes and nothing has changed, does anybody know if...
  2. Betta Fish Bowls, Habitats, and Accessories
    I purchased a 50W submersible heater for my new 2.5 gallon tank. On the box it says it's for 2-10 gallon tanks, but I was wondering if a 50W was too much? I know some people use 25W to heat 2 gallon tanks.
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