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Red Sea Hydrometer with Digital Thermometer

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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.

13 Reviews

DANNY HOWLETT from METTER, GA UNITED STATES

03/23/2011

Experience Level: Beginner

hydromiter

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......

2 out of 2 found this review helpful

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BILL PORTSMITH from ELK GROVE, CA UNITED STATES

03/22/2010

Experience Level: Expert

Good for salinity measurements

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.

3 out of 3 found this review helpful

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BRUCE H TOBIN from ORCHARD LAKE, MI UNITED STATES

03/13/2010

Experience Level: Expert

Hydrometer

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

0 out of 1 found this review helpful

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SEAN JONES from SANTA CRUZ, CA UNITED STATES

02/12/2010

Experience Level: Expert

Decent

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.

2 out of 2 found this review helpful

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SHANE from Morehead City, NC UNITED STATE

02/02/2010

Experience Level: Expert

Don't Buy

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.

1 out of 1 found this review helpful

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901reefgeek from CORDOVA, TN UNITED STATES

12/27/2009

Experience Level: Intermediate

awful

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's a lot better. or try the deep 6.

2 out of 3 found this review helpful

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rmargulieux from COLLEGE STATION, TX UNITED STA

08/06/2009

Experience Level: Beginner

Somewhere between 82 and 86

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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ALESSANDRO FOTI from WINCHESTER, MA UNITED STATES

05/05/2009

Experience Level: Expert

Just Awful

Salinity is off, extremely sensitive to water movement, and even thermometer doesn't work. Just useless.

2 out of 2 found this review helpful

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TERRY WRIGHT from FAYETTEVILLE, AR UNITED STATES

02/20/2009

Experience Level: Intermediate

NOT SO GOOD

At first I thought it would be a great idea to leave in your tank and glance at to check temp and salinity. Bad idea, because in no time some type of algae will grow inside and make it unusable, so after soaking in vinegar to rid the coralline algae, accuracy is questionable to say the least. Also seems to stick so that you have to tap on it.

1 out of 2 found this review helpful

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MICHAEL HUFFMAN from GREENSBORO, NC UNITED STATES

09/05/2008

Experience Level: Intermediate

It works

I bought 2 of these to keep on my tanks. They do work, but, I think if you're just needing to check your salinity during water changes then the need to keep it in your tank isn't necessary. It's a good thought, but...if you're like me and keep your water level topped off then you need not worry about your tanks salinity dropping too much.

4 out of 8 found this review helpful

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