I’ve had germination issues with the Grobo. I was drowning seeds as the cocopod was in the water. I literally moved the pod up over an inch. I killed 3 seeds before I figured out it was the Grobo, even tho I had it set up exactly as it was supposed to be.
I think that I’ve figured out the sweet spot now on my machine and it requires the pod to sit about an inch above the line, keeping a barrier between the water line and the cocopod. Then I will monitor the dampness and spray the cocopod with Great White (a great product for germination) diluted with RO water.
The other thing I’ve done is germinate the seed in the cocopod outside of the grobo using a sandwich bag to keep in moisture