Aquarium Systems Instant Ocean Hydrometer Specific Gravity Meter

Aquarium Systems Instant Ocean Hydrometer Specific Gravity Meter

• Accurate to +/- 0.001 specific
• Easy read two color scale with safe zone
• Ideal for use in warm water aquariums 68 F - 85 F
• Read specific gravity on inside scale and salinity in parts per thousand (ppt) on outside scale