Alright, my plants are starting to need nutrients and I've decided I will start to introduce them to some. The stuff I have is MG All-Purpose Plant Food 24-8-16. The directions say to put in a specific amount (Don't want to go and read it again... too stoned). I've heard to introduce your plants to nutrients by 1/4 the amount of the dose it says. Is this true or should I use half?