[QUOTE=ImACoolguy;3290771]Chances are it still hasn't finished. A water test would confirm.
Get yourself a liquid test kit. It will become your best friend in times of sickness, or mysterious deaths like this. It also lets you know exactly what's in the water. Oh and test strips are junk.
I have an api liquid test kit. I have been testing it every other day and here are my reading
Amonia between 0 and 0.25
Nitrate between 0 and 5 ppm
Today I just did a 20% water change with 1/2 treated tap water and 1/2 RO
water but haven't tested it yet.
Also I set this up 3.5 weeks ago. The test results were from earlier today before the water change