Hi Ron, just wondering if you should keep adding water to a reservoir to keep the water level the same as the plants drink it up or if its ok to just let them drain it down to almost nothing and then just refill it. I've heard that plants use a lot more water that
nutrients and if you let the reservoir just drain without refilling it then the concentration of nutrients will be too high, and the plants will get over fertilized. So again, let it drain to the bottom or keep the level constant? Your wisdom is appreciated my friend!