Reef tank inhabitants come from a warm water environment and therefore require aquarium water temperature to be maintained at the appropriate, and constant, level. Aquarium heaters are offered in two basic styles: ones that can be fully submersed , and ones that can not. Both styles of aquarium heaters will work, and the hobbyists should make a decision based on aesthetics and budget.
While many available aquarium heaters are available, we recommend that you get a quality unit. Variable in temperature can stress your reef tank and make it much more difficult to maintain a successful tank. A minimum of 3-5 watts per gallon are recommended to ensure proper aquarium water temperature. We recomend that you use multiple units in case one fails.
You can not rely on the internal themostat on the aquarium heater to measure temperature. Reef hobbyists should use either a thermomoeter or an aquarium controller with a temperature probe.
NOTE: many heaters will fail ON rather than OFF, meaning they will continue to heat your tank past the set point. Again, please make sure to use a thermometer or a temperature probe to keep track of the temperature in your reef tank.
The Fluval E Series Heaters represent Hagen’s latest most advanced aquarium heaters line. Featuring VueTech technology, the Fluval E Series heaters display water temperature in real-time. Each heater is equipped with an advanced digital microprocessor which continuously monitors the system with the help of dual temperature sensors. This feature is attractive, in particular, for hobbyists not using an aquarium controller.
The display screen of the Fluval E Series aquarium heaters will change colors if the temperature varies +/-1 °C or +/-2 °F or more from the pre-set temperature. The normal green display will turn blue if the temperature drops by more than 2 °F (1 °C) and will turn red if the temperature rises by the same amount. If, however, the temperature swings up or down by 3 °C or 5.5 °F (or more), the colored screen will flash, indicating that there is a problem.
A really cool thing about this line, is that rather than using a dial to set and adjust the temperature. Instead a little lever allows you to modify the temperature settings in 0.5° increments. In case you do not have a sump, and are placing the heater directly in your aquarium, an integrated fish guard ensures that fish and other invertebrates cannot accidentally come in contact with the heating core. Finally, a slim mounting bracket allows you to remove the heater, without having to remove the bracket.
The Fluval M Series Aquarium Heaters feature a reflective look which makes them blend into their surroundings. This may be especially appealing in applications where there is no sump, and the heater is in full view. The Fluval M Series Aquarium Heaters are made in Italy and are put through an extensive series of testing to ensure superior performance. The new temperature dial offers easy handling and adjustment. Fluval M Series Aquarium Heaters can be used in both saltwater and freshwater applications. The M Series Heaters are offered in the range of 50 – 300W.