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How about automatic testing of your tank's Calcium
Recommended Coverage: 24” x 18”
Most probes have a single chamber to house the actual reference probe and fluid that can become contaminated quickly throwing off readings and requiring calibration quite often
Model R483042 Size 48″x30″x42″ Gallons 223 Weight 410 Side Walls 1″ Top and Bottom 1″ Filter Size 36x20x18 # of Overflows 1 Overflow Plumbing in each overflow 2-1″Drain 1-3/4″ Return
They are available in 1½” diameters spheres or 2" cubes
Reef Octopus Universal CO2 Scrubber tag__hot_FREE SHIPPING How about automatic testing ofThe Reef Octopus CO2 Scrubber is a universal reactor that will help stabilize pH levels by lowering the concentration of dissolved CO2 within a reef aquarium.