Salinity question.
- Thread starter Lee adams
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Hugo_Fish
Active Member
never trust that device... get yourself a refractometer
Dburr1014
10K Club member
It may or may not be.Just had some NSW delivered from our local reef..Thought I'd look at the salinity with this device I recieved last week..Why so low? Is the device wrong?
Has it been calibrated? I'm thinking not.
You can make your own fluid to check it.
After the fluid is made, and the device checked, mark it with a sharpie so you will know everytime.
Randy Holmes-Farley
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Local seawater can be reduced in salinity by land runoff, rivers, etc.
it could also be diluted by a seller adding fresh water to it.
And, of course, the measurement could be inaccurate
it could also be diluted by a seller adding fresh water to it.
And, of course, the measurement could be inaccurate
Dom
Full Time Reef Keeper
Just had some NSW delivered from our local reef..Thought I'd look at the salinity with this device I recieved last week..Why so low? Is the device wrong?
That is about the salinity of the water where I live. I'm at the mouth of a harbor where fresh water rivers run into the harbor and out the mouth of the harbor (run off as Randy pointed out).
Sophie"s mom
Valuable Member
A decent refractometer is the only way to go. You can get a less expensive one, as long as it is one that can be calibrated periodically. They are FAR more accurate.Just had some NSW delivered from our local reef..Thought I'd look at the salinity with this device I recieved last week..Why so low? Is the device wrong?
Randy Holmes-Farley
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Looking more closely at that swing arm hydrometer, it is not at all to be trusted because it does not even have the salinity and specific gravity scales properly lined up.
For seawater, 35 ppt has a specific gravity of 1.0264, but those two values are far apart. They may be confusing density with specific gravity, which does not impart confidence.
For seawater, 35 ppt has a specific gravity of 1.0264, but those two values are far apart. They may be confusing density with specific gravity, which does not impart confidence.
Lee adams
Community Member
Lee adams
Community Member
Good idea..Thanks.
