Fertilizer Change During Flower Spike

[Bloomer001]

I'm seeing the plants react to higher N. As I increase the dose, more growth is apparent (roots, leaves & buds.) I have them under the lights 12 hrs a day, so I don't reduce fertilizer in the winter as others do grown under natural light. However, temperature needs to be taken into account as this greatly impacts plant metabolism and growth rate. I'm feeding about 125 mg N weekly in 2 doses. I think this is the max they can handle without adverse affects -- and I have worked them up to this level (I would not recommend going from zero to high levels of N as it may harm them.) After they flower I will greatly reduce fertilizing, and will do a lot of flush waterings with no ferts.

I suspect the Kelpack may be helping nutrient absorption. In the spring, I will slowly restart ferts and likely increase the N dose in the Kelpack treated plants to 150 mg weekly, but this will alter the experiment. I have no doubt N is the primary supplement to increase growth -- in the correct dose based on growing conditions and the health of the plants.

I add a few bark chips to the topsoil once a month. This keeps the soil slightly acidic.