Nyos Magnesium Test Kit

NYOS® REEFER Test Kits deliver laboratory-grade seawater analysis at an accessible price.
Because seawater contains many interfering ions, accurate measurement requires test kits designed specifically for marine conditions. NYOS® REEFER kits are engineered to provide high-precision, reproducible results that match the needs of modern reef aquariums.

These kits combine professional-level accuracy with excellent value, making advanced water testing attainable for everyday hobbyists. Each kit features a calibrated German-made dropper for consistent reagent dosing, reagents produced in Germany under EN ISO 9001 standards, and strict batch testing verified against AAS and NIST references. Clear pictogram-based instructions ensure ease of use, and every component is manufactured to deliver stable, repeatable measurements.

NYOS® REEFER Test Kits provide the reliability you need to maintain water parameters as close to natural seawater as possible, giving your reef the foundation it needs to thrive.