Photo 1 of Hydor Betta Bowl Slim Fish Tank Heater, 4-watt, Measures 3" Round, Black; for Tanks 1-2.5 gallons

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Photo 1 of Hydor Betta Bowl Slim Fish Tank Heater, 4-watt, Measures 3" Round, Black; for Tanks 1-2.5 gallonsPhoto 2 of Hydor Betta Bowl Slim Fish Tank Heater, 4-watt, Measures 3" Round, Black; for Tanks 1-2.5 gallons