Boxtech Aquarium Marine Test Sea Saltwater Hydrometer Reef - Ocean Hydrometer Salinity Meter - for Fish Tank Water Salinity Specific Gravity Test
Sea Hydrometer Salinity Meter Specific Gravity Test for Aquarium Fish Tank Water Marine Sea Saltwater
MECO(TM) Aquarium Glass Hydrometer Fish Tank Water Temperature Thermometer Salt Marine
Aquarium Equip Dr. Marine Glass Saltwater Hydrometer Thermometer Reef Soft Coral
Eowpower Automatic Temperature Compensation Salinity Refractometer for Aquarium Fish Tank Salt Water ATC Hydrometer 0-100ppt/1.0 to 1.070 S.G.
Using a cheap basic Coralife Deepsix Hydrometer to measure specific gravity. I try to aim for 1.025 ppt (parts per thousand of dissolved salts/minerals) at a temp approx 78F to 82F. *Note: always keep the hydrometer filled with a high salinity mixture in storage and always take about 5 samples ...
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