You know what they say: "Silly Rabbit, Tri X is for Kids"
Welcome. I wish that I had a resource like this when I first stepped into a darkroom. You'll be at the head of your D&P classes in no time.
Don't be surprised when you ask a simple, basic question and wind up starting an eighty post arguement over which is the best type of funnel to use
That is called grain. It is supposed to be there.