Red Sea ReefSense Magnetic 4 Probe Holder - Secure Probe Mount for Aquariums eheim external filter The 20kg refill box is

The 20kg refill box is the perfect solution for long-term reef tank maintenance

ideal for bonding coral frags to plugs or rocks in your aquarium

the Nyos Quantum 300 EQ Upgrade Kit ensures improved skimming performance and cleaner

Part of the versatile ReefLED series

low and ultra-low nutrients tank are becoming more and more common

Red Sea ReefSense Magnetic 4 Probe Holder - Secure Probe Mount for Aquariums eheim external filter The 20kg refill box isThe Red Sea ReefSense Magnetic 4 Probe Holder is the perfect solution for organizing and securing up to four probes in your reef aquarium. Designed for convenience, this holder is suitable for 12mm () glass and features a strong magnetic design, ensuring easy attachment and stability. Whether you're using temperature, pH, ORP, or salinity probes, this holder keeps everything neatly in place and accessible, offering a clutter free and efficient setup