Coralife Aquarium Fish Tank Deep Six Hydrometer For Measuring Water Salinity PPT and Specific Gravity

My go to salinity tester

Great

Needed to check saline in the shrimp tank. Easy to use and clean, have to set upside down on a flat surface to dry.... served purpose.

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.

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

Good product and a reasonable price

It’s 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 don’t think it was damaged. But there are five other people in our house. Maybe someone bumped it and caused damage.

I always use these, it gives me great results and is easy to use.