Coralife Aquarium Fish Tank Deep Six Hydrometer For Measuring Water Salinity PPT and Specific Gravity
$12.49
Price: $9.96 - $12.49
(as of Apr 09, 2025 22:01:35 UTC – Details)
Cora life’s Hydrometer takes a true water sample at six inch depth. Easy to read and accurate, this specific gravity meter is designed to give temperature-corrected readings in warm water aquariums. Includes a self-leveling, hanging device and allows your hands to stay dry, avoiding contamination of aquarium.
Is Discontinued By Manufacturer : No
Product Dimensions : 5.5 x 1 x 8.7 inches; 3.2 ounces
Item model number : 100108103
Date First Available : June 20, 2004
Manufacturer : Central Garden & Pet
ASIN : B0002566DS
Country of Origin : China
Coralife is one of the market’s leading manufacturers of premium aquarium products.
Coralife’s Hydrometer takes a true water sample at six inch depth.
Easy to read and accurate this specific gravity meter is designed to give temperature-corrected readings in warm water aquariums.
Customers say
Customers find the hydrometer easy to read and use, with reliable functionality and accurate salinity measurements. The device is compact and simple to operate. While some customers consider it a great value, others find it worthless, and there are mixed opinions about its accuracy and quality, with some units breaking after just three tests. The bubble control feature receives mixed feedback, with some customers reporting no bubbles while others have issues with bubbles getting stuck on the pointer.
AI-generated from the text of customer reviews
13 reviews for Coralife Aquarium Fish Tank Deep Six Hydrometer For Measuring Water Salinity PPT and Specific Gravity
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Eddie –
Great looking and easy saltwater meter
This was easy to use and works great. It will explain were it should read for a fish tank or a reef tank. This is for saltwater tank only
An M. Truong –
Working good
Good product and a reasonable price
cellochad –
Four Stars
The readings are fairly close to my refractometer. I wouldn’t solely rely on this though.
Andy from FL –
If you want to kill your tank, buy this tester.
I bought this and the Instant Ocean hydrometer. I ordered both so I could compare readings to make sure one wasn’t off, after which I was going to keep one in the room where I make up my water for the tank. These things were .004 away from each other so I ordered a refractometer and calibration solution….I really wanted to make SURE I was getting an accurate reading. Calibrated the refractometer and tested my water. Got a 1.026 reading. The Instant Ocean read 1.025 but THIS sucker read 1.029. I’ll still use the Instant Ocean unit for quick readings, knowing to add .001. The Coral Life unit is going in the garbage.Moral to the story. Whatever unit you decide to buy, get a refractometer as well, I bought the Rhino Salinity Refractometer which was under $30. Thirty bucks is awful cheap insurance when you consider the cost a decent coral these days.
GMW –
Good Hydrometer
I always use these, it gives me great results and is easy to use.
Ant –
good readings
works great for a first time saltwater fish tank owner
LollyK –
Started leaking
Itâs easy to use and read. Unfortunately it started leaking during the fourth use. When not in use, it was just sitting on the counter drying so I donât think it was damaged. But there are five other people in our house. Maybe someone bumped it and caused damage.
E! –
Good for what it does.
These are pretty accurate if you need to take a quick ballpark measurement and don’t have the time to work a more precise device.You ABSOLUTELY need to “season the needle” by soaking it in 35ppt salinity water. Before I seasoned it, the needle showed 1ppt higher reading, which is probably why some people think it’s inaccurate.The scale marking are excellent, actually and they even put in a bubble remover on the intake.
Marcus –
The best 20 I’ve spent
robert ashton –
Got this thinks it would be perfect for my brackish tank and they didn’t even send the one in the photo and the one they sent dosnt even read well would not recommend
Zizar –
No es la modelo que se ve en la imagen y la medición no es precisa mejor un refractometro y evitar gastar en estos que son poco confiables
Mark cowan –
Its a great product
Alberto Encinas –
No viene bien calibrado, no es confiable la lectura de la salinidad, 1023 reales me da 1032 en el densimetro