The 3 numbers on it correspond to N-P-K (nitrogen, phosphorus, potassium). When you see the P and K numbers that high along with a very low N, that means it's a bloom booster, something used in the late stages of growth. For veg, you want something with a relatively higher N concentration. 4-3-2 or 5-1-3, something like that. Most of these nutrients work together in combination with others. You should get GH Trio and then add that bloom booster in the second week of flower. Best of luck my friend.