Colorful Corals

So after hearing that this new product worked great, but killed a tank full of corals (I think 4) I decided to try it on my colony tank. I spoke to the manufacturer and he said that it won’t kill your coral like the customer said. Proof is in the video and tank.
However a couple Duncan’s and goni’s did close up a little bit everything was perfect and nothing died. Also you feed this like any other feeding. Small amounts depending how many fish you have. Also it is best to use in quarantine tanks to take away any risk.