Stupid question: how to make a brackish tank?
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Stupid question: how to make a brackish tank?

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Stupid question: how to make a brackish tank?
Old 08-02-2014, 09:53 AM   #1
 
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Red face Stupid question: how to make a brackish tank?

After all this time, I feel REALLY DUMB! I thought my tanks were brackish because I added aquarium salt to them as directed. Now I understand that doesn't work, it has to be Marine Salt, as in brand/type/etc? Does it say marine salt on the outside? How do you tell the difference? I guess I might have thought I had brackish tanks for quite a while, until someone mentioned this. Will my Mollies do OK with only FW or should I convert them to real brackish?
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Old 08-02-2014, 10:02 AM   #2
 
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Many people believe mollies live longer and get less disease in brackish water. They can even live in full strength salt water.
I'm not sure if your cories are in the same tank, but they can't be kept in brackish water.
Anything called marine salt will work. I know Instant Ocean is really popular, but it's one of the more expensive ones, but you use less for brackish anyways. I'm planning on using it for the brackish tank I'm doing. :D
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Old 08-02-2014, 10:15 AM   #3
 
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Corys are in their own tank, so can make others brackish

Is it correct that Sea Salt is not what you need to add, as Salt? Why aren't sources more detailed in their info? So you use sea salt for health and treatment, and Marine Salt for turning it into a brackish tank? In all the stuff I have read, this was not obvious at all. Jeepers!
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Old 08-02-2014, 10:17 AM   #4
 
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Well, aquarium salt is just pure sodium chloride. This is useful for treating minor problems, and freshwater fish can handle a bit of salt.
Ocean salt also contains large amounts of minerals such as calcium and magnesium, which is why it is different. :D
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Old 08-02-2014, 10:24 AM   #5
 
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I live right at the ocean...

I love to swim in the ocean, and now you are telling me I need some Marine Salt for my tanks... will head to PetSmart now. But is it possible that I could go out and get some REAL ocean water for them in a pinch LOL...
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Old 08-02-2014, 02:19 PM   #6
 
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I guess you could but just as you need to regulate temperature and PH when fish are adapting, like new additions to your FW tank, Salinity has to be measured and set for every bucket of water added to a SW tank does it not? That's what they use a hydrometer for right? There can't be drastic changes in salinity or your fish will die.
(I've never had SW... correct me if I'm wrong!)
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Old 08-02-2014, 04:23 PM   #7
 
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Seriously, I got some Marine Salt today

Now the big question is, how to make my FW into brackish tanks so it doesn't hurt my Mollies, adults and babies? Does one do it very slowly, like 5-10% of marine salt per day per gallon, or slower, or faster? I don't care how long it takes for the fish to get accustomed to the salt. I just want to not have any die because of it. I know they are very sensitive.

Should I mix it up say into 2 gallons at a time, and add it to my 20G tank? Or less, like only adding 1 gallon at a time (5%). Please let me know, and I don't know where to look for this information. Does one also add the aquarium salt to the water as well, in order to keep their electrolytes and other health in good shape? Should I use any medication to help this along? Please advise, as I want to do it correctly.
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Old 08-02-2014, 09:09 PM   #8
 
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I'm planning on switching a puffer into brackish soon. I wish I could help more. I know you can switch fish over in one day, by putting them in a bucket and drip acclimating them to brackish with an air line. I still need to do a bit more research, I'm not getting my puffer for at least two weeks. :/
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Old 08-03-2014, 09:49 AM   #9
 
You can get marine salt at walmart in the fish section or buy it site to store and get free shipping. I also want to add that you need a refractometer and to do it VERY slow (I think no more than .10 a week? So you don't hurt your nitrifying bacteria. Also note that they can only survive up to a certain SG.

Last edited by Flint; 08-03-2014 at 09:51 AM..
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Old 08-03-2014, 09:58 AM   #10
 
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A hydrometer is a bit cheaper. Hydrometers measure specific gravity of the water, or SG. Refractometers measure how much light passes through water and how much is blocked by minerals. They are more accurate you will do fine with the hydrometer. Make sure to find one that has an SG starting at 1.000. A brackish tank has salinity of 1.005-1.015. So 0.100 is definitely too much. You really are fine to drip acclimate them over a few hours. The final salinity doesn't matter too much for your mollies, any number in that range will make them happy. There are guides and calculators online as well.
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