Instant Ocean SeaTest Hydrometer

$14.99 $13.49 Save: $1.50 (10%)

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Instant Ocean

Instant Ocean Hydrometer`s new improved design delivers precise full-range salinity and specific gravity readings - accurate to 0.001 - every time. Easy-fill convenience keeps hands dry when filling. It has a durable, permanent needle mount and easy-read 2-color scale with "safe zone" and an extra-wide stabilizer base. Ideal for use in water temperatures of 68 - 85°F.


Manufacturer Info

Instant Ocean Aquarium Supplies
Instant Ocean is one of the aquarium industry`s most trusted brands of marine salt. Instant Ocean products are designed for aquarists who wish to re-create a thriving ocean habitat in their own home. Instant Ocean Sea Salt is one of the most popular brands on the market and is used by public aquariums, zoos and marine adventure parks throughout the country. Instant Ocean continually refines both the ingredients and the manufacturing process of their salt mix to make sure every necessary major and minor trace element is present in every single batch.

Accessories for Instant Ocean SeaTest Hydrometer


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14 Reviewers (64%) would recommend this

Overall Rating:

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“GREAT!”
5.0

All the "experts" tell you to get a refractometer. If used properly, a hydrometer is sufficiently accurate. Maybe not if running experiments for publication in a scientific journal. But just fine for reef tanks. Someone here described the bast way to use it without getting bubbles on t...Read More

  • 1
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“STAY AWAY”
1.0

Reading is way off. I setup my new tank at 1.024 according to this product. After my tank cycled I brought my water to the lfs for them to check my param and salinity reads 1.029. Luckily no fish or coral!

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“Great item for price”
5.0

I have been able to keep my livestock healthy for at least 10 years using this product. While not as accurate as a refractometer, it's very close. I have two of these and they test only about .002 higher than the refractometer. For the price and ease of use it's a great way to get started and kee...Read More

  • 1
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“Good”
4.0

I have used this type of hydrometer in the past and continue to use it as a cheap backup. These instruments are fairly accurate and good to have around. I always check against a refractometer to determine how close the hydrometer is. I have not seen one that has been right on and I have seen some...Read More

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“Ok to start with”
3.0

I got this because I was trying to get by cheaply to start my aquarium but after much review I have found that it would me much better to have a refractometer.

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“Gets the job done.”
4.0

Mine worked great, I have a Digital refractometer as well and have tested it against the more accurate refractometer and was always dead on. The big complaint is you have to slowly fill it and then knock the bubbles off, and there is always a bubble or two that doesn't want to let go leaving me figh...Read More

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“Instant Ocean SeaTest Hydromet”
3.0

is a good product

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Overall, others give this:

14 Reviewers (64%) would recommend this

Overall Rating:

5  Star
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4  Star
 4
3  Star
 2
2  Star
 1
1  Star
 4