Juwel Heating Pro Heater 300 - 300 watt Automatic-Heater (85815)The JUWEL Aquarium Heater is designed to fit perfectly inside the filter system freeing up space in the aquarium and keeping it safe from your fish. It is supplied with the heater holder necessary to install it inside the Juwel Aquarium Filter System and also with suckers to attach it to the glass of the aquarium if it is to be used outside the filter. Juwel heaters are available in four wattages: 50w, 100w 200w 300w The heater is automatic, once set

cultivates high concentrations of beneficial bacteria

pesticides and other chemicals

newly set-up tanks are unsuitable

Ready to Use

facilitating their development and multiplication

Dimensions (L x W x H) mm 200 x 600 x 100 Net weight kg 3

particularly in smaller systems

but they may defend their burrow area and can be territorial towards similar gobies

Our R Extract provides koi keepers and breeders with another science-based option to keep their koi in top form

and a natural protective coating for your fish's gills and body

Perfect for azoox sponges and corals

Everything needed to set up the unit is included in the kit and a third sensor is available as an optional extra to monitor the status of the freshwater reservoir