I water w/runoff about once a week, and the runoff EC is a bit higher than I would like. Between 2.4-2.8 EC (0.4 EC is my water)
I am watering with 1.9-2.0 EC, including the 0.4 water EC, but have been cutting down on the Coco Bloom for the last couple of waterings of the week for a total of 1.5 EC waterings.
Any tip burn I noticed from last week has stopped completely, new growth is coming in good and old growth is looking healthy.
Humidity is hovering around 50-55% on top of the canopy, closer to 55-60% below the canopy.