![Amazon.com: INKBIRDPLUS 300W Submersible Aquarium Heater Titanium Fish Tank Auto Thermostat with LED Digital Temperature Readout and External Temperature Controller for Salt Water and Fresh Water : Pet Supplies Amazon.com: INKBIRDPLUS 300W Submersible Aquarium Heater Titanium Fish Tank Auto Thermostat with LED Digital Temperature Readout and External Temperature Controller for Salt Water and Fresh Water : Pet Supplies](https://m.media-amazon.com/images/I/71Mak2-CWiL.jpg)
Amazon.com: INKBIRDPLUS 300W Submersible Aquarium Heater Titanium Fish Tank Auto Thermostat with LED Digital Temperature Readout and External Temperature Controller for Salt Water and Fresh Water : Pet Supplies
![Amazon.com: Hitop 50W/100W/300W Adjustable Aquarium Heater, Submersible Glass Water Heater for 5 – 70 Gallon Fish Tank : Pet Supplies Amazon.com: Hitop 50W/100W/300W Adjustable Aquarium Heater, Submersible Glass Water Heater for 5 – 70 Gallon Fish Tank : Pet Supplies](https://m.media-amazon.com/images/I/61v7uOq-9KL.jpg)
Amazon.com: Hitop 50W/100W/300W Adjustable Aquarium Heater, Submersible Glass Water Heater for 5 – 70 Gallon Fish Tank : Pet Supplies
![What do you recommend for a heater for a 20 gal? I got the aquarium kit from PetSmart but have read that the heaters suck/ are unreliable… and would rather not come What do you recommend for a heater for a 20 gal? I got the aquarium kit from PetSmart but have read that the heaters suck/ are unreliable… and would rather not come](https://preview.redd.it/asu5ezlqu2j81.jpg?width=640&crop=smart&auto=webp&s=757cdecec80c5961120d157023fde092fa98ad2c)
What do you recommend for a heater for a 20 gal? I got the aquarium kit from PetSmart but have read that the heaters suck/ are unreliable… and would rather not come
![✓ Best Aquarium Heater For 20 Gallon Tank: Aquarium Heater For 20 Gallon Tank | [Tested & Reviewed] - YouTube ✓ Best Aquarium Heater For 20 Gallon Tank: Aquarium Heater For 20 Gallon Tank | [Tested & Reviewed] - YouTube](https://i.ytimg.com/vi/83JID7465RI/maxresdefault.jpg)
✓ Best Aquarium Heater For 20 Gallon Tank: Aquarium Heater For 20 Gallon Tank | [Tested & Reviewed] - YouTube
![Amazon.com: auomii USB Aquarium Heater,10/20/30W Adjustable Mini Fish Tank Heater, External Temperature Controller, LED Display, Used for 1-3 Gallon Tank : Pet Supplies Amazon.com: auomii USB Aquarium Heater,10/20/30W Adjustable Mini Fish Tank Heater, External Temperature Controller, LED Display, Used for 1-3 Gallon Tank : Pet Supplies](https://m.media-amazon.com/images/I/71zD5iSVM5L.jpg)
Amazon.com: auomii USB Aquarium Heater,10/20/30W Adjustable Mini Fish Tank Heater, External Temperature Controller, LED Display, Used for 1-3 Gallon Tank : Pet Supplies
![Amazon.com: YukiHalu Small Submersible Aquarium Heater, Adjustable Mini Fish Tank Heater 25W 50W 100W 200W 300W with External Temperature Controller, LED Display, Used for 5/10/20/40/60 Gallons (25 Watts) : Pet Supplies Amazon.com: YukiHalu Small Submersible Aquarium Heater, Adjustable Mini Fish Tank Heater 25W 50W 100W 200W 300W with External Temperature Controller, LED Display, Used for 5/10/20/40/60 Gallons (25 Watts) : Pet Supplies](https://m.media-amazon.com/images/I/71agX7pGE3L._AC_UF350,350_QL80_.jpg)
Amazon.com: YukiHalu Small Submersible Aquarium Heater, Adjustable Mini Fish Tank Heater 25W 50W 100W 200W 300W with External Temperature Controller, LED Display, Used for 5/10/20/40/60 Gallons (25 Watts) : Pet Supplies
![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 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](https://m.media-amazon.com/images/I/514vqBClgZL.jpg)
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
![Amazon.com: hygger Small Submersible Aquarium Heater 100 Watt Mini Betta Fish Tank Heater with Thermostat for 10-20 Gallon Saltwater Freshwater : Pet Supplies Amazon.com: hygger Small Submersible Aquarium Heater 100 Watt Mini Betta Fish Tank Heater with Thermostat for 10-20 Gallon Saltwater Freshwater : Pet Supplies](https://m.media-amazon.com/images/I/51U93nh8b8L.jpg)
Amazon.com: hygger Small Submersible Aquarium Heater 100 Watt Mini Betta Fish Tank Heater with Thermostat for 10-20 Gallon Saltwater Freshwater : Pet Supplies
![Amazon.com: SALUTE Aquarium Heater Submersible Auto Thermostat Heater, (50W/100W/200W/300W) Fish Tank Heater and Adjustable Temperature with 2 Suction Cups Suitable for 10-115 Gallon Fish Tank : Pet Supplies Amazon.com: SALUTE Aquarium Heater Submersible Auto Thermostat Heater, (50W/100W/200W/300W) Fish Tank Heater and Adjustable Temperature with 2 Suction Cups Suitable for 10-115 Gallon Fish Tank : Pet Supplies](https://m.media-amazon.com/images/I/7159Dso518L.jpg)
Amazon.com: SALUTE Aquarium Heater Submersible Auto Thermostat Heater, (50W/100W/200W/300W) Fish Tank Heater and Adjustable Temperature with 2 Suction Cups Suitable for 10-115 Gallon Fish Tank : Pet Supplies
![Amazon.com: Tetra HT Submersible Aquarium Heater With Electronic Thermostat, 50-Watt, 2-10 Gallon : Pet Supplies Amazon.com: Tetra HT Submersible Aquarium Heater With Electronic Thermostat, 50-Watt, 2-10 Gallon : Pet Supplies](https://m.media-amazon.com/images/I/81TdZIzoTML.jpg)