I thought for years I'd been swindled, as I had this growing in my tank since 2007 and it was always a browned out rainbow. Finally a little piece ended up in extremely high light and flow and it got insanely nice deep rich colors. Turns out it is the real deal, much nicer than most other versions if you can hit it with the flow and the lumens. 1"+ encrusting on 1.5" discs