Have any of you successfully treated popeye using maracyn2 for your fish?

Question

also is it too late to use it on my trimac whose eyes were bulging out for a while?

Answer 1

Maracyn 2 will be very effective, assuming it is just pop eye.  If the swelling is a result of abdominal dropsy caused by something other than a bacterial infection,  your chances are reduced greatly, but there is still a shot.  Remember to remove any activated carbon from your filter during treatment, and keep the tank dark, as minocycline (active ingredient in Maracyn 2) degrades with exposure to light.