Hydor Theo Shatterproof Aquarium Heaters - Multiple Watt Options Select:25W They are a highly effective

They are a highly effective year-round option for fostering aquatic wellness and beauty

Designed to accommodate submerged plantings and the potting or repotting of aquatic plants

CO2 in fresh water

Its efficiency in toxin decomposition means your aquarium inhabitants can thrive in cleaner

optimising both space and style

Hydor Theo Shatterproof Aquarium Heaters - Multiple Watt Options Select:25W They are a highly effectiveExperience unparalleled temperature control with the Hydor Theo Shatterproof Heaters. Engineered to provide precise thermal regulation, this heater is built for safety and durability, offering peace of mind for both novice and experienced aquarists. With its submersible design and advanced shatterproof technology, it withstands the challenges of aquatic environments, ensuring stable and accurate temperature maintenance across a variety of tank sizes.