I have a question. When you say 1/4 strength on the nutes to start and build up, what exactly do you mean? I have CNS17 Grow and it says 15mL/4L for seedlings, 20mL/4L for middle size vegging, and 30mL/4L for full vegging. What would "1/4 strength" be in this situation and how would you build it up?