Refractometer & Hydrometer Calibration Standard (250ml) Continuum Aquatics • BOOSTS GENERAL HARDNESS -

• BOOSTS GENERAL HARDNESS - Enhances aquarium water by adding essential minerals like calcium

canister filters

and cyanobacteria from flat surfaces

soft algae

or live foods—no refrigeration needed

Refractometer & Hydrometer Calibration Standard (250ml) Continuum Aquatics • BOOSTS GENERAL HARDNESS -GUARANTEED ACCURATE SALINITY TESTING Calibrates refractometers and hydrometers to ideal 35 ppt salinity and 1. 026 specific gravity for marine tanks. OPTIMIZED FOR MARINE AQUARIUMS Ensures accurate salinity adjustments critical for coral health and saltwater fish comfort in reef aquariums. DUAL PURPOSE CALIBRATION SOLUTION Works with both refractometers and swing arm hydrometersdesigned specifically for saltwater aquarium use. LAB GRADE QUALITY