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Coralife Deep Six Hydrometer Wide Range Specific Gravity Meter

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Coralife

The re-designed deep six hydrometer with improved calibration and bubble diffuser ensures more accurate readings of your aquarium salt levels. Also includes a built in base so you can rest the hydrometer on a counter top or other flat surface when taking salt readings.

  • Specific Gravity and Salinity PPT Scales
  • Optimal Specific Gravity / Salinity range indicator on scale
  • Bubble diffuser on water intake prevents micro-bubbles from forming on needle



Manufacturer Info

Coralife Aquarium Supplies
Coralife is one of the market’s leading manufacturers of premium aquarium products. The brand is best known for their comprehensive line of aquarium lights, protein skimmers and calcium reactors. Coralife’s unique line of aquarium accessories—protective gloves for maintenance and coral propagation, accurate and affordable digital thermometers and hydrometers—set Coralife apart from other brands and have created quite a following among aquarium hobbyists. With an ever-expanding and diverse product line coupled with customer support that is second-to-none, Coralife sets the bar high for aquarium supply manufacturers and they will no doubt continue to wow aquarists with their innovative, low-cost solutions for years to come.


Warranty

1 year manufacturer warranty

18 Reviews

CHAD DAVENPORT from TORRANCE, CA UNITED STATES

06/24/2014

Experience Level: Expert

Not accurate

I bought this from my LFS. I wasn't happy with it. It just wasn't accurate. I bought a Salinity Refractometer and have been much happier with my readings. I think it is a better buy to get a salinity refractometer instead.

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JENNIFER FUCHS from Ashburn, VA UNITED STATES

06/14/2014

Experience Level: Intermediate

Excellent

Easy to use. Easy to read. Works great. Just be sure it is filled completely and set it on an even and level surface. You may need to tap out air bubbles to get proper reading. Test 3 times for accuracy.

2 out of 3 found this review helpful

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MIKE MCCUBBINS from FORT WAYNE, IN UNITED STATES

04/19/2013

Experience Level: Intermediate

Junk

I let this item soak in saltwater per instructions and it's stays at the highest mark on the chart. Water right out of the faucet will not even zero it out. Neat design but accuracy is way off. I would not recommend this product. I had to give it one star in order to submit this, it doesn't deserve it.

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jason from CA ,UNITED STATES

02/17/2010

Experience Level: Beginner

quick and easy

quick and easy what more can i say.

1 out of 1 found this review helpful

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JOSEPH BARRECA from FORT MYERS, FL UNITED STATES

07/13/2009

Experience Level: Expert

DO NOT BUY

I have used cheap hydrometers in the past but this is by far the WORST I have come across. I just purchased a Refractometer.

1 out of 2 found this review helpful

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TORI LEWSADER from KELSEYVILLE, CA UNITED STATES

06/15/2009

Experience Level: Intermediate

Not as anticipated

I bought this hydrometer because I have used other Coralife products, and have been very happy. This product, however, is not living up to its claim. If you hold the unit by the little tab at the top, it floats and only collects water skimmed from the surface (it claims to collect from 6 in below surface).I have to tap on it to get a reading. In fact, I find myself checking and rechecking. I'm going back to my old hydrometer. I don't trust this product.

1 out of 3 found this review helpful

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C.P. from

04/24/2009

Experience Level: Expert

Your doin it wrong

The deep six hydrometer works great. Just make sure you know how to use it properly. Tap all of the bubbles out and fill it clear to the top. A difference in salinity of .010 isn't going to kill even the most finicky of marine life. Not even close. Give your animals more credit.

3 out of 5 found this review helpful

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Piper Keairnes from Suwanee, GA

02/04/2009

Experience Level: Beginner

Dangerous

This product is very easy to use, but it gives incorrect readings. Do not trust it.I always rinsed it in freshwater after use. I usually had to take several readings and tap to release air bubbles in order to get a consistent reading. But ultimately I was having to add too much salt mix to my replacement water so I figured the hydrometer might be wrong. I bought the refractometer, calibrated it, and found that my tank was actually running at 1.030. It wasn't a total disaster, but it is definitely not what I wanted. Skip the cheap hydrometers and get something you can trust.

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Anthony from VALLEY VILLAGE, CA UNITED STAT

01/26/2009

Experience Level: Expert

Extremely inaccurate

Dont waste your money on this product. Spend an extra 30 dollors and buy the marine depopt refractometer. They are like 40-50 bucks. These are really never calibrted to begin with, and are almost always extemely wrong with there readings. Dont waste your time or money.

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GEORGE MEZORI from SEBRING, FL UNITED STATES

07/30/2008

Experience Level: Intermediate

These devices stink.

They "may" be good for you at first... IF they are. Othewise over time they will 100% for sure fail you. Salinity in a reef tank has to be controlled pretty tight. My swimgarm told me I had 1.025.. it was 1.029 via Refractometer. I HIGHLY suggest a refractometer... they are cheap... just a tiny bit more than a swingarm.

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