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you can sustain the effectiveness and quiet operation of your filtration system
as well as any standard 4"/10cm filter bag holder
as well as fostering a habitat for zooplankton
ensuring crystal-clear water that enhances the light penetration and vitality of your aquarium environment
Built-in safety features like the auto switch-off function prevent damage
Fritz 35ppt Refractometer Calibration Solution tank-only you can sustain the effectivenessPre measured refractometer calibration solution takes the guesswork out of properly calibrating your instrument with no need for expensive or unreliable measuring equipment. A refractometer is essential to the saltwater hobbyist for success. Maintain its accuracy by recalibrating regularly. Directions & Dosage Shake bottle well before application. Ensure the refractometer prism surface is clean, wipe with distilled or RO water if necessary and dry