![betta fish sorority in 75 gallon tank keep dying. tested water for practically everything. the old heater "blew up" and thats possibly why they died? any advice would be great : r/Aquariums betta fish sorority in 75 gallon tank keep dying. tested water for practically everything. the old heater "blew up" and thats possibly why they died? any advice would be great : r/Aquariums](https://i.redd.it/uiiz5wr52ega1.jpg)
betta fish sorority in 75 gallon tank keep dying. tested water for practically everything. the old heater "blew up" and thats possibly why they died? any advice would be great : r/Aquariums
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Amazon.com: hygger 40-75 Gallon Small Aquarium Heater with LED Display Controller, Quartz Submersible Fish Tank Heater 300 W Saltwater Freshwater : Pet Supplies
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HiTauing Aquarium Heater, 500W Fish Tank Heater with LED Digital Display & 5 Safety Protection, Submersible Aquarium Heater with 2 Suction Cup and 8.2Ft Cord for 75-120 Gallon Fish Tank. : Amazon.ca: Pet Supplies
![Amazon.com: hygger 40-75 Gallon Small Aquarium Heater with LED Display Controller, Quartz Submersible Fish Tank Heater 300 W Saltwater Freshwater : Pet Supplies Amazon.com: hygger 40-75 Gallon Small Aquarium Heater with LED Display Controller, Quartz Submersible Fish Tank Heater 300 W Saltwater Freshwater : Pet Supplies](https://m.media-amazon.com/images/S/aplus-media-library-service-media/df98c223-48f3-4bf0-923a-9cd8ddf9e79a.__CR0,0,400,400_PT0_SX300_V1___.jpg)
Amazon.com: hygger 40-75 Gallon Small Aquarium Heater with LED Display Controller, Quartz Submersible Fish Tank Heater 300 W Saltwater Freshwater : Pet Supplies
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