Help!!! I have a one gallon tank with a Betta and a mystery snail and I found a snail dead in there today and I'm not sure how long he has been dea and one of my ghost shrimp was dead in there as well. He does overnight. My other ghost shrimp and mystery snail ate doing just fine. I tested the water and the ammonia was so high it was off the chart!! I got nervous and did a huge water change like 75 percent. I tested the water a few minutes later and it still is so high with fresh water! My problem is tomorrow I need to move my fry into this tank. I have a 16g and I was thinking I could dump everything out and clean the tank and then I could get some water from my big tank to fill the small tank so the water is okay for the fry tomorrow. Help please!!!