Hello everyone. I want to tell you that as a teenager on a budget, I used several Top Fin products because they were more affordable for me. Nearly all of my Top Fin filters and one of my tanks have a top fin and they seem to have worked well so far. I was often helped by representatives of the
top fin customer service. I believe this is a genuine Top Fin product. Packaging and labeling is now slightly changed, so it is easy to notice when ordering.