Ok i dont know whats goin on. i will give all info i can, I had 4 mollies die on me in the past 9 hrs. I woke up and my male dalmation molly was dead. So i took him out and did a test strip on the water, the alkalinity was the only thing off and barely. so i did a seperate ammonia test which was fine check the ph seperately it was fine, then did a nitrite test and it was fine. So i just kept an eye on them, about 2hrs later my gold molly died. So i did a 75% water change, starting to worry at that time. Then about 30 min ago i found my other two mollies dead. i did another water change and cleaned the tank. and put all my other fish in a rubbermaid. I couldnt find anything wrong with them no diseases or parasites that i could see. Please if you know anything about something like this happening.