Enhance the monitoring of your fish tank with the Reef Factory Probes Multi Holder, capable of securely holding up to 5 probes in your sump. Whether it's a pH probe, salinity probe, or temperature probe, this holder is the perfect solution for optimizing your Reef Factory Thermo Control, Salinity Guardian, and PH View systems. Keep your probes organized and your water parameters in check with this essential accessory. Explore the latest in aquarium supplies and streamline your monitoring process with the Reef Factory Probes Multi Holder.