D-D True Seawater Refractometer In-Sump Protein Skimmer including even the most sensitive

including even the most sensitive species

Warmer temperatures translates to more activity and the need for more food

Derivatives Of Vegetable Origin

More Balanced Nutrient Profile Than Live Foods

D-D True Seawater Refractometer In-Sump Protein Skimmer including even the most sensitiveHand held instrument for the measurement of the TRUE Salinity and Specific Gravity (S. G.) of sea water by refractive index. What is different about the D D Seawater Refractometer? Almost all hand held salt water refractometers available to the hobby are designed and calibrated for the testing of brine solutions, i. e. sodium chloride, and are not calibrated for the refractive index of natural sea water. Even though the largest percentage of salt in