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Old 03-09-2014, 06:44 PM   #31
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Originally Posted by threnjen View Post
just found my super accurate scale. Few minutes and I will tell you the 100ppm weight and spoon amount for Kosher, table and aquarium salt.

I would like to know how many mg/l for 1ppm nitrite if you could
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Old 03-09-2014, 06:58 PM   #32
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Table salt:
3.55g or 1/2 level tsp added 1142ppm to 1 gallon water.
So appx 1/2tsp (3550mg) per 10 gallons of aquarium water, which is appx 1/2 tsp per 40 liters (37.85 liters). So weight per 10L using more accurate conversion is 938mg. That would be really small on a spoon though. I think the smallest you could present it as a measurement is 1/4tsp per 20L.
This yields appx 100ppm, protection for 1ppm nitrite. (will actually yield about 114ppm, so maybe just stress that the spoon should not be mounded but level or even a bit under)


Kosher salt:
2.56g or 1/2 level tsp added 790ppm (not enough, goal 1000)
Added .94 g made it 1040ppm, so perfect.
So still about 3500mg of salt per 10 gallons, or 40 liters. 925mg per 10 liters.
Kosher is chunkier though, so this would be most accurately described as 1/2 MOUNDED tsp if not going by weight.
note: My Kosher salt has Yellow Prussiate as the anti-caking, and it's the same brand as my table salt. This means that my table salt with calcium silicate is actually SAFER than the Kosher salt, even though I see people recommend using Kosher salt as an Aquarium salt alternative.

Working on the aquarium salt now. It takes longer to dissolve.
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Old 03-09-2014, 07:01 PM   #33
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Aquarium salt:
3.28g or 1/2 level tsp added 940ppm. Pretty close then.
I bet the "magic" spot is still 3.5g. It seems that the weight is all that really matters.
So same conversions as the other two, for weight :P

I would say about 930mg of any kind of salt per 10l would yield the accurate results.
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Old 03-09-2014, 07:07 PM   #34
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Edited first salt post with some liter conversions
Edit: and added post for aquarium salt. all done!
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Old 03-09-2014, 07:17 PM   #35
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I missed something along the way. Why are you aiming for 100 ppm salt again for 1 nitrite?
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Old 03-09-2014, 07:21 PM   #36
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I missed something along the way. Why are you aiming for 100 ppm salt again for 1 nitrite?
That was just the recommended amount in one of the papers I read by some fisheries expert. It was this one:
http://www.aces.edu/dept/fisheries/a...BrownBlood.pdf

What was the recommended amount in that first paper you posted? I can't remember.

I need to do that crazy thing where I take notes while I read through all of them so we can come up with a more blanket recommendation. Otherwise I forget quickly what I read and where.
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Old 03-09-2014, 07:23 PM   #37
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Aquarium salt:
3.28g or 1/2 level tsp added 940ppm. Pretty close then.
I bet the "magic" spot is still 3.5g. It seems that the weight is all that really matters.
So same conversions as the other two, for weight :P

I would say about 930mg of any kind of salt per 10l would yield the accurate results.

So that would be 93mg/l of salt to protect against 1ppm nitrite. 46.5mg/l to protect against 0.5ppm and 23.25mg/l to protect against 0.2ppm nitrite.
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Old 03-09-2014, 07:28 PM   #38
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Originally Posted by threnjen View Post
That was just the recommended amount in one of the papers I read by some fisheries expert. It was this one:
http://www.aces.edu/dept/fisheries/a...BrownBlood.pdf

What was the recommended amount in that first paper you posted? I can't remember.

I need to do that crazy thing where I take notes while I read through all of them so we can come up with a more blanket recommendation. Otherwise I forget quickly what I read and where.

It actually just says 2mg/l offsets 0.76mg/l of nitrite
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Old 03-09-2014, 07:28 PM   #39
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Sounds good. But, most people don't have a scale that accurate, so we have to be able to disseminate in a more understandable form.

Do guys use stuff like tsp and Tbsp?? I don't actually know.
(why oh why doesn't the US convert to metric and stop being so dumb and annoying)
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Old 03-09-2014, 07:31 PM   #40
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It actually just says 2mg/l offsets 0.76mg/l of nitrite
Wow so that paper is really different. 2mg/l for .76ppm nitrite, and the paper I referenced was 93mg/l for 1ppm nitrite??

OK but... maybe in GOOD news... the amount of salt we are talking about is overall really, REALLY low. I mean 1/2tsp per 40l is really nothing. So even if we estimate high, there's really little chance of any sort of "damage" to the fish that are less salt tolerant. (in my opinion)
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