Alot of definition loss is from water weight if you are eating pretty clean. If not it could be both. It's normal to gain some fat because you are bulking up and taking in more calories than normal. When you get off of it you will notice a loss of water weight and then you can get your BF measured and see how much fat you've gained. I love test E also man. Strength goes through the roof and you get big which is good in my book.
