i have only heard the term SG (specific gravity) and i was wondering if the water can be measured in ppt (parts per thousand) or ppm.
The reason i ask is that i have a digital salt meter that measures in ppt... would be good to make handy.
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Measuring Brackish Water
Started by Blakey, Feb 20 2008 07:58 PM
4 replies to this topic
#1
Blakey
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- Forum Member Joined: 11-October 04
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Location: Scarborough, WA
Posted 20 February 2008 - 07:58 PM
#2
Mr_docfish
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- PCS Club Member
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Joined: 29-July 07
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Location: Canning Vale WA
Posted 20 February 2008 - 09:18 PM
Brackish water can have a salt concentration of 1 ppt. to 30 ppt. (1g to 30g of salt per litre) It depends on the species being kept, whether they are a predominantly a freshwater or saltwater species.
#3
Adam
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- Forum Member Joined: 15-September 04
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Location: Bunbury, WA
Posted 21 February 2008 - 08:28 AM
Rain water is around 10-20ppm TDS
Rain water runoff <120ppm TDS
WHO set a limit around 800ppm TDS for Drinking Water
Sheep drink upto around 4,500ppm (4.5ppt) TDS
Seawater is 36,000pmm (36ppt) TDS
Most brackish fish are keeped between 5,000 (5ppt) and 15,000 (15ppt), but is of course species specific.
If you want to see how the salt/fresh water wedges operate in the Swan River on a seasonal basis vist the Swan River Trust Website.
Adam
Rain water runoff <120ppm TDS
WHO set a limit around 800ppm TDS for Drinking Water
Sheep drink upto around 4,500ppm (4.5ppt) TDS
Seawater is 36,000pmm (36ppt) TDS
Most brackish fish are keeped between 5,000 (5ppt) and 15,000 (15ppt), but is of course species specific.
If you want to see how the salt/fresh water wedges operate in the Swan River on a seasonal basis vist the Swan River Trust Website.
Adam
#4
Blakey
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- Forum Member Joined: 11-October 04
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Location: Scarborough, WA
Posted 21 February 2008 - 02:51 PM
well lets be specific to my mangrove jack... will 5ppt be alright?
#5
Adam
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- Forum Member Joined: 15-September 04
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Location: Bunbury, WA
Posted 21 February 2008 - 03:20 PM
Knock yourself out. It will be fine in full fresh to about 45ppt, from personal experience. 5ppt will be fine.
Adam
Adam
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