The #1 thing to grab at your local store, will be a digital thermometer. For bulking, take the T3 in the morning before you eat your first meal. Take your temperature before you get out of bed every morning, you want it to read between 97.8 and 98.2 degrees.
If you are running Trenbolone on cycle, tren actually lowers your thyroid. For me Tren actually shut my Thyroid off and when i run Tren i have to take 20mcg T3 daily to keep my thyroid active.
You can use T3 for Bulk. But you need to find which dose works for you. I suggest start with 30mcg and it will help stop bloating and water retention. It will also keep your results lean. Here is the main thing for cutting and bulking. If you Take T3 at night before bed it is going to burn fat and if you are not on steroids, and have a meal before sleep then you will burn muscle also. So if you are bulking you are going to want to take the T3 in the morning when you wake up. This way you have food all day and night to stop you from burning muscle

Keep the Protein up. You will strictly burn fat.