Salinity Test

Started by crewstation, May 23, 2012, 07:28:20 AM

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crewstation

Does anyone here bother testing the water for salinity, and if so, where would I find a device to test the waters? 
Oh, de crab, he taste so fine.
Yuh catch 'um wid a neck an' a line.
Bile de water 'til 'e good 'n hot.
Den eat de crab strait from 'de pot.

Oh, de beer, he taste so chilly.
Drinks it 'til I gets too silly.
Washin' down 'de crab an' butter.
If I doesn't fall down, I'll 'ave anudder.

Ron

Mike---->   I just googled it for you.   Looks like there are a ton of hand-held salinity meters out on the market. 
Blue Crab Advisor to the NJ Marine Fisheries Council

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crewstation

Thanks, thought it might be useful in rivers especially.  I'm coming down to SP on Friday unless I come up with another idea.
Oh, de crab, he taste so fine.
Yuh catch 'um wid a neck an' a line.
Bile de water 'til 'e good 'n hot.
Den eat de crab strait from 'de pot.

Oh, de beer, he taste so chilly.
Drinks it 'til I gets too silly.
Washin' down 'de crab an' butter.
If I doesn't fall down, I'll 'ave anudder.

bassman349

#3
Here's a website for some data buoys that list salinity along with other data.  Might give you a general idea on the salinity.

http://buoybay.noaa.gov/locations.html

Oops!  Just realized you're probably looking for salinity in the Jersey area. The link I just posted won't help. 

Dreampixels



Remember when ya do the test - get the tester down where the crabs would be - the salt water is more dense then fresh - the water will be fresher on the top.
I wish to die like my father did, in his "sleep" - unlike the screaming passengers aboard the plane he was piloting.

There are no passengers on spaceship earth. We are all crew.    Marshall McLuhan
.
Aviation in itself is not inherently dangerous. But to an even greater degree than the sea, it is terribly unforgiving of any carelessness, incapacity or neglect.

— Captain A. G. Lamplugh

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crewstation

Quote from: bassman349 on May 23, 2012, 09:15:18 AM
Here's a website for some data buoys that list salinity along with other data.  Might give you a general idea on the salinity.

http://buoybay.noaa.gov/locations.html

Oops!  Just realized you're probably looking for salinity in the Jersey area. The link I just posted won't help. 

Thanks for the info.  I've seen those on the NOAA site, but was looking more toward learning where, on a particular river, the salinity drops off, how much the rain affects it, etc.  Just something to add to the log when crabbing (and fishing).  And just another way to obsess.
Oh, de crab, he taste so fine.
Yuh catch 'um wid a neck an' a line.
Bile de water 'til 'e good 'n hot.
Den eat de crab strait from 'de pot.

Oh, de beer, he taste so chilly.
Drinks it 'til I gets too silly.
Washin' down 'de crab an' butter.
If I doesn't fall down, I'll 'ave anudder.

Dreampixels



Try a Pet Shop - I am sure they sell test kits for Salt Water Aquariums
I wish to die like my father did, in his "sleep" - unlike the screaming passengers aboard the plane he was piloting.

There are no passengers on spaceship earth. We are all crew.    Marshall McLuhan
.
Aviation in itself is not inherently dangerous. But to an even greater degree than the sea, it is terribly unforgiving of any carelessness, incapacity or neglect.

— Captain A. G. Lamplugh

tugcapt

The best way to test is with a small hydrometer. If you know the temperature of the water, compare where it floats and use a chart to find specific gravity. You can sample at different depths and as much as you want, no batteries, caliberation fluids or test range to worry about.
Chart for hydrometer http://www.lumcon.edu/education/studentdatabase/SGTable.pdf
Honorary Chesapeake Spudman

lreops





How about a little refresher, what is considered the range of ppm's that best suit our little friends. :-\ :-\

Ron

Always looking to learn
Always looking to share
Always looking for fun

fishingtom

I don't know about their preference but I prefer them loaded with rock salt...

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jinocrab88

 ??? Im curious why check water for salinity if you know where crabs are at all jokes aside  ???

crewstation

Quote from: jinocrab88 on May 29, 2012, 11:17:17 PM
??? Im curious why check water for salinity if you know where crabs are at all jokes aside  ???

If I knew where the crabs are, then I wouldn't need anything but a net and a line. 

I'm looking for a way to gather as much info as possible on my catches and my bad days, particularly the bad days.  Looking to develop my own list of red X'es the right way, and any info I can gather will help. 

As for a refresher, (direct from the Mini Blue Crab):
During the summer months, males are found from freshwater to the polyhaline zone (waters with salinities of 18-30 ppt), although they occur in the greatest numbers in salinities of 3-15 ppt. Maximum numbers of females occur down Bay at salinities of 10 ppt to ocean salinities.
Oh, de crab, he taste so fine.
Yuh catch 'um wid a neck an' a line.
Bile de water 'til 'e good 'n hot.
Den eat de crab strait from 'de pot.

Oh, de beer, he taste so chilly.
Drinks it 'til I gets too silly.
Washin' down 'de crab an' butter.
If I doesn't fall down, I'll 'ave anudder.

scoopnet

Try a refractometer.  They cost around $50.00 and are very accurate. They are hand held and look like a small telescope. All you do is put a drop of the water you want to test on a len and look into to it.  There is a scale that shows the salinity in ppt. I take readings periodically where I pot my shedders and adjust my shedding tank salinity (Closed system) to match. Make sure you calibrate it first. You can find them on line.

crewstation

Oh, de crab, he taste so fine.
Yuh catch 'um wid a neck an' a line.
Bile de water 'til 'e good 'n hot.
Den eat de crab strait from 'de pot.

Oh, de beer, he taste so chilly.
Drinks it 'til I gets too silly.
Washin' down 'de crab an' butter.
If I doesn't fall down, I'll 'ave anudder.

registereduser

taste it, dont drink it,
crabs can be found in fresh water as well as full  salt ocean water.  good crab waters are slightly salty like tears imo.
he who talks much says little

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Capt. Debbie

Knowing the salinity in an area the size of 100 foot ball fields will not help much to pick a spot-  would it?  You could be 50 feet off a hot spot and never know.  Salinity is only part of the calculus of crabbing.




Quote from: crewstation on May 30, 2012, 07:56:36 AM
If I knew where the crabs are, then I wouldn't need anything but a net and a line. 

I'm looking for a way to gather as much info as possible on my catches and my bad days, particularly the bad days.  Looking to develop my own list of red X'es the right way, and any info I can gather will help. 

As for a refresher, (direct from the Mini Blue Crab):
During the summer months, males are found from freshwater to the polyhaline zone (waters with salinities of 18-30 ppt), although they occur in the greatest numbers in salinities of 3-15 ppt. Maximum numbers of females occur down Bay at salinities of 10 ppt to ocean salinities.
Captain Debbie
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