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The slowly sinking granules with excellent digestibility keep their shape particularly well and do not pollute the water
and every 6 - 8 months in low-nutrient systems
hole-in-the-head disease
Replenishes iodine levels and won't encourage nuisance algae growth
The 1 to 1
Eheim True Temp Aquarium Heater 150 Watts sera San Nature The slowly sinking granules withEheim Jager True Temp series heaters. Made of 2mm thick shock resistant Pyrex glass construction, they are stronger and twice as thick as most other heaters. The Jager heater features a precision bistable thermostat with + 0. 5 accuracy. Perfect for freshwater or saltwater aquariums. Fully submersible aquarium heater with dry run protection. Adjustable from 64F to 94F with an easy to adjust thermostat. Free from radio and TV interference. 6 foot