DAY 8:
* Seed has 6-7 mm long tale.
* Transfered day 8 to rockwool, soaked in ph 6.0, only water
* Seed + rockwool is now in min green house 88% humidity.
* Sprayed with Canna Rhizotonic (2ml/liter)
Q: When do I give Canna Aqua A+B nutritions?
That's 5-7 days after sprouting sorry. And start her on 1/3 1/2 strength autos need less then photo strains. Your humidity is a little high for my liking. 65-75% for seedlings around 65 for veg and preflower/late flowering 45-55 max.
Nice mix of nutes. With the Rhiz which I have also. It's great stuff. I have the biocanna 1 and it says give 16ml/l to seedlings. But 2 your question. After applying that, the rockwool should hold enough to see you through your first wk to 5 days. Happy growing, good luck.