For nutrients I believe MG has some flowering fertilizers. Basically you want high Nitrogen or N during veg and high Phosphorous or P during flowering, but don't neccessarily follow the package directionswith miraclegro. If you're going to use it every 1-2 weeks only use it at 1/2 the recommended strength. MG can be overdone easily. It's not always good to keep pumping your plants full of food. Buy a growbook at borders, the grow bible is pretty good. It doesn'thave to be a science, just let it grow. peace.....again.