Neptune Magnetic Probe Rack Groupers replace one bag at a

replace one bag at a time each week until all bags have been changed

Neptune LSM Lunar LED String - 4 LED

built for larger freshwater or saltwater aquarium return and circulation applications

Slides over the MP40 wet side for straightforward installation and removal

Neptune Magnetic Probe Rack Groupers replace one bag at aNeptune Magnetic Probe Rack Neptune Magnetic Probe Rack is an acrylic magnetic probe holder for organizing up to four aquarium probes in a sump or aquarium while keeping them secure and properly positioned. Organized Probe Placement for Apex Systems Loose probes can shift, dangle, touch each other, sit too shallow, or end up in areas with poor water movement. The Neptune Magnetic Probe Rack helps keep probes arranged in one clean location so pH, ORP,