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    Fluval Sea Hydrometer


    Item # 258824 / Manufacturer Part # 14356

    Was $11.19
    Now $5.30
    Fluval Sea Hydrometer provides accurate measurement of specific gravity and salinity in marine aquariums. Features large, easy-to-read markings with ideal salinity range clearly marked in green for clarity. Compact and easy to use, the hydrometer can be permanently installed inside the tank for continuous readings, or it can be used as a portable device, allowing you to take samples from multiple tanks.

    Average Rating

    POS 8/27/2015

    Reviewer: Jeff Henderson

    This is the most poorly designed hydrometer of all time. It's awkward. It will not sit on a flat surface. And you have to bang it like a gong to achieve a measurement. 

    Flival in-tank 5/26/2014

    Reviewer: Smoker

    Some people say this is accurate and some say it isn't. Mine isn't. It's also kind of big.