Acraflavin question with regard to the filter

[Shari]

I have been keeping Discus for about 12 years and medicated over this time with
everything from Prazi to Quick Cure and Metro, but never have used Acraflavin. I need
to give my fish a treatment and all I happen to have in the house right now is some old
Prazi powder in the freezer or the Jungle Internal Parasite Guard which contains Metro and
Acraflavin. I'm worried about Acraflavin harming the filter? Does anyone know if it will hurt
the bio? Thanks.

[pcsb23]

At high doses it will set the filter back, I suspect at the dosage level in that product it will hardly affect the filter.