In the top left corner there is the text ‘Values in 1 liter’, I would guess that the numbers are grams/liter
Do you have an EC meter? I would
- Measure the water EC before you add anything
- Add 0.6g start fert to 1 liter of water
- Measure the water EC again
Subtract the number from step 1 from step 3 to find how much it has changed. It should be 1.2EC
If your water is very hard (step 1 is a big number) you might want to reduce the nutes to get the EC to 1.2 total. The numbers in the schedule likely assume your water has a start EC of 0 (distilled/RO water)
I normally do these kind of checks when I use new nutes just to get a rough idea of how much gives what EC. Then when I have done mixing I can do a double check on the EC. I also do the same tests for pH, that way I know with 10 liters of water plus X amount of nutes I need to add Y drops of pH up/down. It just makes life a bit easier / saves time
The hydro feeding schedule seems to have an error in it
Grow period 0 - 0.6gr 1.2EC
Grow period 1 - 0.37gr 1.56EC <<< WTF?
I’m betting that should be 0.73g / liter
When you scale up the amount of water you should also scale up the amount of nutes, the goal is to get the right EC irrespective of how much water there is total.
So 0.6g/liter => 6g in 10 Liters or 60g in 100 Liters
It has to be said, the feeding schedule isn’t very clear or easy to understand. Strange since Robert’s other documents are very clear and comprehensive