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Red Sea Hydrometer with Digital Thermometer


RS3211

This item has been discontinued.

Red Sea

Unique intergrated hydrometer and thermometer. Provides accurate measurement of specific gravity (degree of salinity) in a saltwater aquarium. Patented design enables device to be permanently installed inside aquarium, allowing time for micro bubbles to dissolve for continuous, accurate, real-time reading of salinity in addition to regular periodic reading. Built in digital thermometer ensures water being tested is at correct temperature. Bubble-proof casing for easy reading results


Manufacturer Info

With a dedicated team of scientists and other professionals, Red Sea is widely recognized as a leading innovator and manufacturer of quality products for aquarium hobbyists. Red Sea constantly strives to provide hobbyists of all levels with highly effective solution-driven products designed to make your fish-keeping experience as enjoyable and successful as possible.

The embodiment of Red Sea’s dedication to providing solutions for today’s reef-keepers is its range of MAX-NANO, MAX-E & MAX-S aquariums- The only choice for true Plug & Play™ coral reef aquariums, now featuring the very latest in LED lighting technology.

For advanced reef-keepers the Red Sea REEFER provides a great platform into which you can add your own selection of hardware. With its ultra-clear glass, ATO built-in, silent flow valve and superb quality of finish the REEFER sets the standard for those wishing to customize. REEFER is also available as a Deluxe version with LED lighting included.

Red Sea’s unique Reef Care Program (RCP) provides a comprehensive, safe and easy to use program for testing and supplementing within reef aquaria, and is perfectly complemented by Red Sea’s Coral Pro & Red Sea Salt’s, which has become the salt of choice for those seeking the very highest quality water quality for their coral reef aquariums. Both salts are made using a unique natural process which delivers unrivalled homogeneity and is perfect for delicate corals. Check your individual bucket of salt’s composition using Red Sea’s innovative new “MyBatch” software.

Whatever your aquatic needs, Red Sea delivers high quality innovative, solution based products.

Accessories for Red Sea Hydrometer with Digital Thermometer


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13 Reviewers (69%) would recommend this

Overall Rating:

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“hydromiter”
4.0

Great Idea for being able to keep in the tank or sump! My only problem is that the temp gauge does not show the correct temp. But all in all it is a good hydrometer with extras that you may like or diss like! I will continue to use this for now but will be relying on an other thermometer......

  • 1
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“Decent”
4.0

It seems to have always been fairly accurate for Salinity measurement but dont rely on it to give accurate temperature measurements. A good product overall if you are looking for sg measurements, but not temp.

  • 1
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“Good for salinity measurements”
3.0

Good at measuring your salinity and it is easy to use. I use it about once a week to check my salinity. The temperature gauge is junk though. But, overall, I would recommend it to others as a good hydrometer.

  • 1
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“Hydrometer”
5.0

Excellent product. Accurate and makes monitoring salinity simple. Sticks to front glass inside tank and continuously reports salinity and temperature.

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“Don't Buy”
1.0

As some others have said, very inaccurate and temp strip does not work. I had this in my sump and in main tank and the results were identical. Deep 6 or coralife hydrometer much better and accurate.

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“awful”
1.0

i purchased this hydrometer a couple of weeks ago...it is the pits!!! you can get a reading of 1.021 one minute, then retest it and have a reading totally off the chart the next....don't waste your time with this hydrometer. red sea should be ashamed of themselves. i got a coral life hydrometer...it...Read More

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“Somewhere between 82 and 86”
4.0

Works great. Only drawback is limited markings. My tanks is stable between 82-86, but in order to get an accurate salinity measurement you need more precise temperature readings.

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Overall, others give this:

13 Reviewers (69%) would recommend this

Overall Rating:

5.0  Star
 1
4.5  Star
 0
4.0  Star
 4
3.5  Star
 0
3.0  Star
 2
2.5  Star
 0
2.0  Star
 2
1.5  Star
 0
1.0  Star
 4
0.5  Star
 0