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Amazon.com: Hitop 50W/100W/300W Adjustable Aquarium Heater, Submersible Glass Water Heater for 5 – 70 Gallon Fish Tank (100W) : Pet Supplies
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MQ Submersible Aquarium Heater, 200-500W LED Display Fish Tank Heater with External Thermostat Controller and Thermometer Sticker, Auto Thermostat for Tank 30-80 Gallon 500W for 70-80 Gallon Tank
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Amazon.com: Submersible Aquarium Heater 300w 100w 200w, Fish Tank Water Heater and Thermometer with Adjustable Temperature for 20 Gallon,30 Gallon, 50 Gallon Tank,with 2 Pieces Suction Cup Suckers 100w : Pet Supplies
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MQ Submersible Aquarium Heater, 200-500W LED Display Fish Tank Heater with External Thermostat Controller and Thermometer Sticker, Auto Thermostat for Tank 30-80 Gallon 500W for 70-80 Gallon Tank
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"30 gallon fish tank filter heater with two big Oscar fish one big Jack Dempsey one medium size Jack Dempsey cichlids and one green terror cichlid medium size and one firemouth cichlid medium size and one medium size electric yellow cichlid and two ...
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Amazon.com: hygger 300W Aquarium Heater with External Digital Temperature Controller Reef Saltwater Fish Tank Heater for 30-60 Gallon Tank : Pet Supplies
![Do platys need a heater? The tank is at 70 degrees without one. I have 11 platys in this 30 gallon, is that a good amount or can I add more? : r/ Aquariums Do platys need a heater? The tank is at 70 degrees without one. I have 11 platys in this 30 gallon, is that a good amount or can I add more? : r/ Aquariums](https://preview.redd.it/do-platys-need-a-heater-the-tank-is-at-70-degrees-without-v0-d3b04cxl3fua1.jpg?width=640&crop=smart&auto=webp&s=db5d6f607eb89a36d1186978a27a88d0dd6dba49)