Eheim 100 Watt Thermocontrol Aquarium Heater Bass & Basslets or gravel vacuuming

or gravel vacuuming

we recommend at least 120 gallons or larger

even if it later appears to return toward its original colour

feeding adjustments or carbon-dosing programs

Installation: For in-sump marine and reef aquarium filtration

Eheim 100 Watt Thermocontrol Aquarium Heater Bass & Basslets or gravel vacuumingEheim 100 Watt Thermocontrol Aquarium Heater Stable Temperature Support for Medium Aquariums The Eheim 100 Watt Thermocontrol Aquarium Heater provides precise adjustable heating for freshwater and marine aquariums where consistent temperature control is essential. Its laboratory glass jacket, watertight submersible design, and accurate thermostat make it a trusted heating option for everyday aquarium use. Eheim 100W Thermocontrol Heater Features 100