This hydrometer is a simple and accurate tool for measuring salinity and specific gravity in marine aquariums. Its compact design features large, easy-to-read markings, making measurements quick and straightforward.

The ideal salinity and specific gravity range is clearly marked for added convenience. Robust and easy to clean, this hydrometer is designed for reliable, everyday use.

HOW TO USE

RINSE BEFORE USE: Rinse the hydrometer with fresh water to remove dust or residue.

Fill slowly: Submerge the hydrometer fully in your aquarium or sump and let it fill by tipping it slightly.

Avoid air bubbles, tap gently to release any trapped under the swing arm.

Let the arm settle: Hold the hydrometer level and wait a few seconds for the swing arm to stabilize.

TYPICAL MARINE AQUARIUMS RANGE FROM 1.023–1.025 SG.

Read the Salinity: Read the specific gravity (SG) or salinity at the line where the arm points.

RINSE AFTER USE: Immediately rinse with fresh water and allow it to dry to prevent salt buildup and sticking.

CHECK ACCURACY REGULARLY: Periodically clean the swing arm area and compare readings with a known-standard solution for best accuracy

For best results, test water regularly as stable salinity levels are essential for the health of marine fish and invertebrates