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Old 02-08-2010, 01:57 PM   #11 
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table salt has impurities I believe that why it's safer to use aquarium salt, I could be wrong
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Old 02-09-2010, 03:12 PM   #12 
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Yeah from what I've read, table salt is bad because companies put more things than just salt in for humans benefits, such as iodine and the like. Stick with aquarium salt. But it works great, I always use salt in my 10g and in my little ones as well
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Old 02-09-2010, 06:18 PM   #13 
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I wouldn't put anything other than aquarium salt into your tanks, if you're going to use any kind of salt. Other salts may have additives or a denser concentration of minerals that are not suitable for fish. Also, I'm quite sure that aquarium salt says on it "not suitable for human consumption", whereas something like sea salt is safe for us to eat. So what's been done to change it that makes it safe for us? If it doesn't say safe for fish, I really wouldn't use it.

But I'm actually going to have to argue against the use of salt all the time in aquariums. Salt can be used to treat ich, but the overuse of salt in aquariums has actually resulted in strains of ich that are resistant to salt all together (in the same way that overuse of antibiotics produces super bugs).

Here's a link dispelling some of the "myths" about salt in freshwater aquariums - I think this is a good guide to follow:
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Old 02-09-2010, 07:06 PM   #14 
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Great point pink diamond about the salt resistant parasites and bacteria.

I think everyone should know this though, it is super important in terms of fish physiology. Salt also affects the osmoregulation of the strictly fresh water fish as well, it disrupts their ion water balance which is not that good in the long run. Freshwater fish have a higher concentration of salt in their bodies than their surroundings, so their bodies are built to manage their ions in their body based on their environment. The salt will move from a high concentration to a low concentration as will water. The fish will always be focusing on keeping their ion levels constant because it will be moving from them into their environment.

When switching the environment to a higher salt concentration the fish will get more ions, yes this is true but not really that good...because,they will lose water to their environment in the process. This is because now the environment has a higher ion concentration than the fish. As the ions move into the body, water in their bodies are pulled out....fresh water fish are not equipped to have to compensate for water loss in this way as they do not drink.

Salt water fish do drink to gain water! And they also have specialized chloride cells to get rid of excess ions, which fresh water fish do not. That is how salt water fish manage their water concentration when the ion conc in water is higher than that in their bodies....thus you are inadvertantly dehydrating your fresh water fish by adding salt in the water...basically.

I would always go with salt baths over putting salt directly into tanks. Every once and awhile straight in the tank should be okay, but you should think about the internal effects on the body it is having. The fish has to work harder to maintain homeostasis. That's my honest opinion and my reasoning for this. It is a little more complicated than what I described but I don't want to bore anyone with my physiology nerding out You don;t have to follow my advise or anything I just wanted to explain why I always tell people SALT BATHS over right in the tank.
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