Jonesie
Well-known member
It's interesting to read the sweet spot for the LED's @musashi. First grow with them was a touch disastrous using Max light. Huge lesson. Put latest plants under them at 25% which is the minimum and a metre above the canopy. Have slight leaf discolouration on 2 and have raised light to the Max. Previous plants were pretty healthy at 75% in late flower but burnt and bleached at 100%Step by step with the inputs. Simple soil and water to start with. And sometimes it is that one "bag" of soil that is used that may be bad.
@Proud Kraut makes a good case for CalMag as plants seem to want to grow quicker under LED. So they need nutrient. They look like they could use more N to increase biomass and the stretch appears their need for light. If you change feed, wait a week to see any change. Get them closer like 24". If the LED has a dimmer switch, cut light by 50% then increase and observe response. I'm finding the sweet spot with these lights is 50-75% power. Don't rely on meters, look to your plants for answers. Take your plants off the floor if you can. If not a small table for elevation then at least those foam pads that @Swifty uses would be perfect. Did you see my post on microbes? There is only one that currently has known affinity to cannabis. Plants have been growing for millions of years without our help. If I have learned anything from this soul-filling hobby is don't overlove them.
mu
Have been pondering this and believe you just confirmed what I was thinking.