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Aquarium Hydrometers

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Coralife Deep Six Hydrometer Coralife Deep Six Hydrometer

Product Code: RES00877
The Coralife Deep Six Hydrometer range is 1.000 to 1.032. The Deep Six is accurate to +/- 0.001 specific gravity.

Our Price: $9.79
In Stock
Aquarium Systems Instant Ocean Hydrometer (TK-504) Instant Ocean Hydrometer (TK-504)

Product Code: RAS02503
The Instant Ocean Hydrometer (TK-504) delivers precise full-range salinity and specific gravity readings--accurate to 0.001.

Our Price: $9.99
In Stock
Two Little Fishies AccuraSea 250 ml Two Little Fishies AccuraSea, 250 ml

Product Code: RTL50700
With Two Little Fishies AccuraSea you can measure your salinity precisely. AccuraSea seawater reference solution is the only calibration solution of its kind made from real seawater. Its pure natural sea water micron filtered and UV sterilized then adjusted with reverse osmosis water to the standard S = 35 or conductivity of 53 mS/cm at 25C (77F).

Our Price: $12.04
In Stock