the evil cyno bacteria

Oh it works, but we grow plants and antibiotics are not plant nutrients.

Therefore, the solution is to addressed the poor plant growth, not merely how to kill BGA, that part is easy, you need to have both parts here, not just merely how to kill something that appears you don't like.

BGA appears for a defined reason and is a certain sign of aquarium/plant neglect.

Pills will not cure that part in anyway.

Regards,
Tom Barr
 
AquariaCentral.com