He has some interesting videos but I always feel like I am being scolded for being an idiot when I watch them. Certain scientific types in the hobby sort of use their knowledge as a weapon and bludgeon you with it. There is a certain great planted tank guy who makes me feel the same way (but I am not going to mention any names).
My problem with his videos is that he doesn't really explain how or why anything works. He just makes it seem like if you're not doing what he's doing then you're an idiot.