Killing Pest Coral

[Spyd]

The last part worried me. Just be VERY careful with those palys. The palytoxins are extremely dangerous and easily absorbs into your skin, eyes, mouth, etc. the stuff can send you to the hospital so you have to be extremely careful when removing them. Be sure not to boil the palys as the toxins can turn to vapour as well. Honestly, your best bet is to get rid of the rock and start again or pull it out and let everything die or soak it in RO/DI water for a long time.