| In my experience, Prazi results in some flashing during the first 12 hours. (Some say from the flukes being irritated.) After 48 hours, the flukes are gone. But, leave it without water changes for 7-10 days to get a thorough 'kill' and eliminate the next generation hatching out.
I would be very concerned about using any medication at more than the recommended rate. Doubling the amount used is asking for trouble! ProForm C is milder than other forms of formalin & malachite green, but it is still serious stuff. Depending on the level of organics and algae in the pond, there may be very serious consequences. I suggest you go to koivet.com and read the article on Proform C. |