Is Prazi reef safe and live rocks safe?

[Mightyfish]

I am planning to treat my fish with Prazi and I am wondering whether it is reef safe and live rocks safe? Would it destroy nutrifying bacteria in live rocks?

 

[HumbleFish]

It is generally considered "reef safe" except for anything that's a worm. So, it may kill tube worms/feather dusters, and also bristle worms.

The other danger is if you have a large population of those tiny tube worms and bristle worms, the resulting die-off can trigger an ammonia spike.

 

[Mightyfish]

Got it. Thanks Humblefish.