I’m new to growing and I’ve got almost everything figured out other than nutrient and ec.
Do you mix nutrients in the ratio on the bottle and dilute to achieve ec/ppm?
I’ve tried a few feeding schedules but my ec is always low. I Start with ro water thats is like 12 ppm then after adding nutrients I end up with around 500 ec/250 ppm.
Should I be using more to achieve the 1.5 ec for week 2 of veg?
This is what you do. If you have a low TDS after mixing (assuming TDS meter is accurate) then you would need to mix to a higher concentration than you have but with the same ratio of nutrients called for.
I would suggest using an actual grow schedule rather than the callout on the package.
Ideally in veg your target will be around 900 ppm/1.8 EC. Flower levels will be up around 1,100/2.2.
Thanks for the info that lukas method is easy to understand. It doesn’t say anything about calmag. My ro water is like 12ppm does it need calmag with this method?