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#1
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salinity testing
ok, more questions (VBG)
I purchased a hydrometer which tests specific gravity & salinity in the water. ( I wanted to test the salt content & then add salt to find out gallonage for my pond) when I 1st added the water,, I thought **YIKES** it read above 40!!! but,, dang I forgot to look at directions,,,,, it said to tap off the air bubbles............**DUHH** it now reads UNDER "0".. looks like maybe 2 points under (?) the test kit reads in PPT's & they are listed in numbers from "0" to "40" soooo how does this read as the testing goes? from the other posts its in the ".00" readings,, do I read the markers as ".00" to ".40" ??? since the reading is UNDER "0" should I add 10 lbs of salt ( pond should be over 2500 gal) & get a reading? then add more to do the difference to figure out the gallonage? do I HAVE to wait 1 day?? or can it be checked after the salt has dissolved? (HOW long does the salinity STAY in the pond?) |
#2
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salinity testing
Don't know about the readings, as I don't use salt, but the salt stays in
your pond until you remove it. IE: Water changes. It won't evaporate by itself. Just incase you don't know, plants don't like very much salt. Bob -- Take ME away to email Check out my pond page at: Http://Trains99.tripod.com Click the My Pond button on the left "*muffin*" wrote in message ... ok, more questions (VBG) I purchased a hydrometer which tests specific gravity & salinity in the water. ( I wanted to test the salt content & then add salt to find out gallonage for my pond) when I 1st added the water,, I thought **YIKES** it read above 40!!! but,, dang I forgot to look at directions,,,,, it said to tap off the air bubbles............**DUHH** it now reads UNDER "0".. looks like maybe 2 points under (?) the test kit reads in PPT's & they are listed in numbers from "0" to "40" soooo how does this read as the testing goes? from the other posts its in the ".00" readings,, do I read the markers as ".00" to ".40" ??? since the reading is UNDER "0" should I add 10 lbs of salt ( pond should be over 2500 gal) & get a reading? then add more to do the difference to figure out the gallonage? do I HAVE to wait 1 day?? or can it be checked after the salt has dissolved? (HOW long does the salinity STAY in the pond?) |
#3
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salinity testing
The hydrometer needs to have a modification to be of any use. It reads PPT
max 40 which is 4% or about 13 times higher than you would ever want. Doc Johnson shows a method of drilling a hole in the swing arm counterweight about half way between the hinge and the point. Place in a container of 0.3% solution water (2.4 teaspoons per gallon) and see if it reads 30. If it doesn't come up that high then drill the hole slightly larger. They are designed for use in salt water aquaria. It is much easier and better to use the liquid drop test kit. -- RichToyBox http://www.geocities.com/richtoybox/pondintro.html "*muffin*" wrote in message ... ok, more questions (VBG) I purchased a hydrometer which tests specific gravity & salinity in the water. ( I wanted to test the salt content & then add salt to find out gallonage for my pond) when I 1st added the water,, I thought **YIKES** it read above 40!!! but,, dang I forgot to look at directions,,,,, it said to tap off the air bubbles............**DUHH** it now reads UNDER "0".. looks like maybe 2 points under (?) the test kit reads in PPT's & they are listed in numbers from "0" to "40" soooo how does this read as the testing goes? from the other posts its in the ".00" readings,, do I read the markers as ".00" to ".40" ??? since the reading is UNDER "0" should I add 10 lbs of salt ( pond should be over 2500 gal) & get a reading? then add more to do the difference to figure out the gallonage? do I HAVE to wait 1 day?? or can it be checked after the salt has dissolved? (HOW long does the salinity STAY in the pond?) |
#4
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salinity testing
On Sat, 17 May 2003 01:12:22 GMT, "RichToyBox"
wrote: designed for use in salt water aquaria. It is much easier and better to use the liquid drop test kit. I agree, the meters have to be calibrated, and to calibrate you have to buy the solution they sell, as it is darn difficult to make your own salt solution accurate without a chemist's lab to do it in. (So says my chemist hubby). I suppose one could calibrate the meter by using the liquid test to double check the reading? Course it wouldn't hurt to be able to double check the liquid test either. What a hobby you've chosen, huh? ;o) ~ jan See my ponds and filter design: http://users.owt.com/jjspond/ ~Keep 'em Wet!~ Tri-Cities WA Zone 7a To e-mail see website |
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