Bah humbug!

[WingedWren]

All right. I posted before that I had two mollies and they had babies. We hadn't cycled the tank and the ammonia and nitrite got too high for them. They all died from some stress related fungus. We treated them. The babies died all pretty much at the same time, which was odd. That's not what this is about though. We took them out and properly cycled the tank with added ammonia. Finally, both the ammonia and the nitrite got down to the very low level and we decided to get a couple fish and try it out. We did a fifty percent water change before getting them and tested again. Everything was fine. I put Super Fungus Plus in there, which I've used before, just to make sure the fungus was totally gone. We let them sit in their bag in our tank for about...an hour. Then we put them in. Two Tiger Barbs. It's a ten gallon tank. Well, it's about...nine hours later and they're both dead. We just tested the ammonia. It's between 0 and 0.25. The nitrites are less than 0.3. The General Hardness is between 5 and 6. The pH was about 7.5 and the CO2 is about 6. That's what we got with our test kit. We don't have a heater in there or a temp gage, but I'd say it's about 70. Do they need heated water? I guess I should have asked... I just looked at a Tiger Barb care site... http/tropical-fish.net/Barbs/tiger_barb.htm And it's all pretty much in parameter. We used distilled water to do the 50% change, which I now learn is not the best for my fish, but would that just kill them within hours? Ugh! I just don't understand. I don't want to put some more fish in there if they are just going to die. Maybe it was the...Super Fungus Plus. I know I'm not giving you guys a lot to go on but...if you have any suggestions, I would love to hear them. Both my husband and I are very frustrated and sad!

Laurie