Yes sodium chloride is common table salt.Isn't Sodium Chloride " Salt " how does that soften the water
Gemtrox i have 14 corys in my tank and i feed them Tetra mini tabs, they have a tablet split in half and while eating it if throws off small food and the fish take it in so your cardinals would be well fed off them plus i give my corys bottom pellets besides, while i grind bug bites into the water for my other fish. Min tabs are a good feed for fish.Ok, I have been doing this for a while now and usually 3 or 4 corys find it before they are descended upon by some cardinals and my mollies. Like I said, if they are getting enough food by sharing the wafers and eating fungus and the very few leftovers, I wouldn't worry, but if not I am looking for something else to help them out.