Vertex Bio Pellets vs. NP Pellets what is the difference

[The Grizz]

I have had zero issues and I think when I kicked in the NP pellets in my 2 TLF150s I put 500ml in each, way more then recommended so I think I will throw the hole 1000 ml of the Vertec pellets into the MR1 and see how it works.

I might as well fly by the seat of my pant like Kien does I mean seriously look at his reef tank!! Can't be all that bad right.