What's up everyone? Welcome back to the podcast. This is Kevin from epic gardening.

From the podcast and from the epic gardening YouTube which I'm putting two videos a

week out on so if you are a podcast listener, but you haven't checked the

YouTube or the website out, well go on over to the YouTube because there's cool

videos coming out twice a week now, if not even more. So I just try to expand on to a different medium having some fun with these

videos and definitely having fun connecting with all you guys in the

comments which is just super rewarding so anyways today's question it comes

from bill and what he says is this my question So anyways, today's question, it comes from Bill.

And what he says is this, my question,

if you ever have a chance to cover it,

deals with nutrient levels.

In my hydroponic systems, I normally start out

with fresh nutrient reservoir, and I change it out for a completely fresh

reservoir as my PPM drops. PPM for those that don't know means parts per million.

I've seen informational videos on larger systems and it seems that they run

continuously and manage and record their nutrients. How are they measuring to understand what has been used of the NPK scale of their nutrient?

For example, if the plants use up P in a higher relational amount than N,

that means that the percentage of certain macro nutrients will be higher.

And if they're running a continuous system, they might get dangerously high.

So basically what he's asking here is if you're running a continuous hydroponic system

and you never do a completely fresh change of nutrients,

how do you know exactly what percentages of each micro and

...