U got to turn off ur UV and remove your charcoal.
Handle with glove. It contains 0.24% formaldehyde and Machalite Green, in another word, Carcinogen.
I've tried b4 anyway and it does not really work. If u have understood the life cycle of Ick, you will not be able to control it at full blown.
Therefore, always quarantine, Hypo or Copper