Dunge
- 2,233
- 263
Based on the size of the fingers, I think this is reading in ml.
Presently reading 100 ml.
The warnings you are reading are trying to protect you from using too much nutrients.
Using too much kills plants, while using too little causes them to show deficiency which can be corrected.
I have used the Advanced Nutrient three part, and it works.
Get accustomed to hefting your plants to feel if they need water.
Try not to over water.
Keep your relative humidity up with a plastic tent, and keep a fan moving the air.
Good luck