02-11-2007, 03:35 AM
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I would suggest "marine salt" instead of "aquarium salt". The mineral content is a huge difference, and the things the mollys need is more found in the marine salts. Instant Ocean, Reef Crystals, and a few of the other top brands are pretty close in content, so any of them would be a good option. Before adding salt, what other fish are in the tank with the molly? Some fish won't be able to tolerate those conditions. Also, are there live plants in the tank? There are lower levels of salt that can be added according to what else is in the tank, and any salt would benefit the molly.