04-11-2012, 03:48 PM
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I would cut the salt dose to 1/2 tbsp per 5 gal. to start. I don't know about how much salt the cories can take, They say kosher salt is the same as aquarium salt, but dont use regular table salt. It has iodine and other nasties in it. You can buy aquarium salt, if possible. Probably the best, but I have a 110 gal platy/ molly tank, so I use kosher salt, and it seems to work fine.