05-30-2009, 08:13 PM
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Welcome to the forum Shaggy.
Do not add any more fish to that tank. You have an uncycled tank that is not ready for any fish. If you have a liquid type testing kit, the kind with the little test tubes, sample your water at least daily and change water enough that the ammonia and nitrites never go above 0.25 ppm. If you don't have the test kit, you can figure that a 50% daily water change for the next few weeks may keep the remaining fish alive. To do a water change, start by vacuuming the water from the bottom of the tank picking up any uneaten food as you go. Then add dechlorinator to the fresh water and add that water back into the tank. The new water should be about the same temperature as the tank water to avoid any stress to the fish.
For mollies, water that is fairly hard with a high pH is a must. Again, I would use a liquid type test to find out if the water's pH is over 7.5. If it is, the water is probably OK for a molly. If it is not, look into how hard the water is where you live. If people complain about the high mineral content of the water and how hard it is, it is probably hard enough for a molly. I keep mine in water that runs about 7.8 pH and 12 German degrees of hardness. The units matter because there are 3 or 4 different scales used to express the hardness of water.