Well ive done it for my self and poured 1/4 strenght nutes on a baby seedling and didnt fuck up a thing..
Shes still going...
And i was sure she was going to show me some burned tips.
Kelp b1 and superthrive are not needed but can be extremely helpful in lowering plants stress and good for the roots (kelp)
Coco can be pretty inert but i like a target ph of 6
Sorry i like to give easy to follow tips with out all the details to confuse peeps.
Cause ive seen many get lost in the details and end up in the plant help section
All just my experience and oppinon in 15 years worth of this
Im not a phd
Just my 2