So today I decided to deal with the Cyano that started in my new frag tank that was connected to the system during the summer. I believe the initial outbreak was a combination of: 20 lbs of new sand and the new acrylic frag tank itself. It has been mentioned in a few publications that new plastic parts initially leach a few things like silicates and such into the water column. Anyway the Cyano started there and only moved to the display upon me moving some frags to the display. ...