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Old 03-02-2014, 08:07 AM   #1
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Is my water fresh, brackish, or salt?

See I'm quite not sure. I have guppies and they require a little bit of salt to survive, so I add aquarium salt. I have one rounded Tablespoon added to every 5 gallons of water. So does this mean it's brackish? Salt? Or still fresh?
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Old 03-02-2014, 08:35 AM   #2
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I'd say its fresh with some added salt.

I believe brackish is where the specific gravity is in the range of 1.005-1.010 and saltwater is in the range of 1.021-1.024.
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Old 03-02-2014, 08:59 AM   #3
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Salt is 1.020-1.026
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Old 03-02-2014, 09:49 AM   #4
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Quote:
Originally Posted by Macscale View Post
Salt is 1.020-1.026

Thanks for the correction. As my usernames implies...
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Old 03-02-2014, 10:24 AM   #5
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I have converted 8 guppies to full salt water. There colors just pop in salt water. Had them in my 75 gallon along with other saltwater fish for over a year now and doing great
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Old 03-02-2014, 11:30 AM   #6
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It's definitely a fresh water tank. There's a little bit of salt in just about all water. I would like to point out that added salt isn't necessary at all for guppies. They hardly need it to survive.
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Old 03-02-2014, 05:04 PM   #7
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Brackish Water

Quote:
Originally Posted by alvinsguppies View Post
See I'm quite not sure. I have guppies and they require a little bit of salt to survive, so I add aquarium salt. I have one rounded Tablespoon added to every 5 gallons of water. So does this mean it's brackish? Salt? Or still fresh?
Hello al...

Brackish water holds .5 to 30 grams of salt per quart of water. Since you add a tablespoon of salt to every 5 gallons of water, I'd definitely say the water is brackish.

Your livebearing fish don't need as much as you're dosing. A rounded teaspoon is plenty. Your plants will appreciate less.

B
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Old 03-02-2014, 05:13 PM   #8
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Hello al...

Brackish water holds .5 to 30 grams of salt per quart of water. Since you add a tablespoon of salt to every 5 gallons of water, I'd definitely say the water is brackish.

Your livebearing fish don't need as much as you're dosing. A rounded teaspoon is plenty. Your plants will appreciate less.

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Brackish water is approximately 1 tablespoon of salt per gallon. The amount used here is 1/5th of that
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Old 03-03-2014, 11:51 AM   #9
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Brackish water and full saltwater require marine salt mix to be added, not aquarium salt. Marine salt mixes are different than aquarium salt- they contain a lot more than just NaCl.

I will second that guppies do NOT need salt added to the water. They do not fare well in soft water, however. I use alkaline buffer for my guppies and other livebearers.
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Old 03-03-2014, 12:13 PM   #10
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Brackish Water

Interesting. My source defines brackish as a measure of salinity and includes sodium chloride as one of the sources of salinity. Whatever the case, the poster is welcomed to use a little salt in their fish tanks or not. I prefer to use a little, to avoid the possibility of using more later.

Have a good one!

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