Hi Fishlore, During my water change today I decided to change my purigen. After adding it, yet again I got a bunch of soap bubbles. I don't know what I am doing wrong. Anyways I removed it immediately. I then added chemi-pure elite, followed the directions by rinsing until clear, but as soon as I put it in my tank it turned my tank black. What should I do? Will my fish be okay? Thanks!