For best results place the thermometer far away from the heater. Make sure there are no plants or decorations in direct contact with the heater. The supplied thermometer enables you to double check the water temperature. If the model can only be installed vertically or horizontally then make sure it is the right way. Check Price Key Facts: Manufacturer: Orlushy; Weight: 1.6 pounds; Explosion-proof thickened quartz glass; Automatic safety shut-off and overheating protection features; Suitable for freshwater and saltwater tanks; When we first unpacked this aquarium heater, we were pleased to notice that it seemed quite sturdy. It displays both in Celsius and Fahrenheit, so you won’t get them muddled! It is a great cheap option in heating your tank. If you have a smaller tank you can purchase lower powered 50W, 75W, and 100W models. The thermostat can be adjusted by turning the dial on the top of the heater. Wait 30 minutes before turning the aquarium heater on. If you forget to turn it off, the neo-therm will...Virtually indestructible. Accurate, one-touch system. Submersible Aquarium Heaters are made from thermal shatter-resistant quartz glass and were designed to absorb impacts, making them extremely durable. Where Should You Place An Aquarium Heater? The protective container the heater is in is double sealed to prevent scolding and melting. A power indicator light turns on when the unit is heating, Can be positioned at a vertical or horizontal angle. ★300W aquarium heater is suitable for 50 to 80 gallons aquariums,Length - 11 inch,voltage 110-120V, power cord is 6ft, please choose the right wattage aquarium heater according to our size chart. ViaAqua 200-Watt Quartz Glass Submersible Heater with Built-In Thermostat, 5. Having fish in a tank that is fluctuating in temperature can cause them a lot of stress. Simply set temperature between 66-96°f with one touch and the neo-therm electronic thermostat will maintain Tank temperature within...Ultimate safety and reliability. Sale Aqueon Adjustable PRO Aquarium Heater 100 Watts Adjustable heat setting 68 to 88°F, Electronic Thermostat accurate to +/- 1°Shatterproof and nearly indestructibleFully submersible; Auto Shut-Off when over-heats, resets when it cools downLED light is always on: red when heating, green when not heatingLimited Lifetime warranty $35.99 Buy on Amazon. Orlushy Digital Smart Fully Submersible Heater. It can maintain the optimal temperature automatically and will stop when the needed level of heat is reached. While this temperature is perfect for most tropical fish, if your fish require another temperature then don’t get this model! For instance, if your tank is in a colder room, then it will take more energy to get to and maintain the same temperature than the same tank in a warmer room. This allows for complete control of the aquatic climate within a 1 degree difference. For small aquariums, Aqueon Submersible Aquarium Heater is the most cost-efficient choice with a price tag up to $20. This is a great feature to have in a cheaper model. Cobalt Aquatics Flat Neo-Therm Aquarium Heater Super-flat design. Conclusion And Recommendation for the Best Aquarium Heaters. An LED indicator shows when the heater is on and actively heating, while an automatic safety shut off prevents overheating and damage. The heater and controller power cords are the same...【Fully Automatic Control】very easy and reliable to use. Besides, temperature range also matters. Made in Poland and... $169.99 Buy on Amazon. Works only for small aquariums up to 5.5 gals. Another precaution measure includes buying a cover for a heater. There have been some references detailing trouble with the suction cups provided, but the three year warranty should cover this if it proves to be an issue. There’s no sense in having the tank at 75⁰F when you only need it at 71. Orlushy Submersible Aquarium Heater 300W-Fish Tahk Heater with Adjust Knob Thermostat 2 Suction Cups... boxtech Aquarium Heater 300W, Submersible Fish Tank Thermostat Proof Explosion and Auto Digital... hygger 200W Titanium Aquarium Heater for Salt Water and Fresh Water, Digital Submersible Heater with... U-pick Aquarium Heater with Extra Thermometer,Submersible Fish Tank Heater with Adjustable... ViaAqua 300-Watt Quartz Glass Submersible Heater with Built-In Thermostat. It has an LCD that shows you the temperature in real-time because of the dual temperature sensors. The heater can be easily installed in any freshwater or saltwater tank using the two suction cups. This is the second aquarium heater by Hygger on this list and it isn’t by mistake. With multiple power options available and some great features it won’t let you down. 300W. Remember to buy a heater which is the correct power for the size of your tank. A red light indicates that it is actively heating, while a green light means it is on but not heating. The unit also comes with a very accurate thermometer which attaches to the control module. This gives you increased safety. Key Features: 100W heater suitable for 15 to 30 gallons aquariums; Temperature range between 68 and 89°F; Comes with two suction cups; Cost: $18. The thermostat has an auto shut off feature which prevents overheating and damage. Meanwhile, two heaters used simultaneously will do their work perfectly well. More expensive doesn’t necessarily mean better, though you will often find more functions on an expensive aquarium heater. Many heaters are able to raise water temperatures 3⁰F above ambient room temperatures, but this model is able to effectively raise water temperature 11⁰F above the ambient, meaning that it will be able to get to your required temperature easily. If the heater model you purchase varies greatly from the following guideline than they should let you know in the instructions. Remember though that depending on the heater model it can change, so always go with what the manufacturer recommends! A large percentage of fish require warm water to survive, so unless you live in a year-long warm country, the likelihood is, you’ll need a heater to keep your tank at a consistent temperature. Safe to use: Double waterproof protection, complete underwater design can accurately maintain the temperature. This way the thermostat will spot the water temperature more accurately to turn the heater on and off when necessary. So be aware of the price of the heater model you are looking at. Ultimate safety and reliability. If it can be either then get it how you like it! Pros. As for our recommendation for the best aquarium heater on the market, it really depends on your price range. Our opinion It's not exactly accurate but it turns easy and can be adjusted at small intervals.★Explosion Proof: 2mm thickened quartz glass,can be used in fresh water and salt water aquariums,easy to hide in the tank.★Precise temperature dial from 68 to 89°F allows for complete control of aquatic climate within a 1-degree difference.★Adjustable Aquarium Fish Tank Water Heater Sensitive and reliable thermostat maintains uniform temperature.