humidity

Hey NeroHero, You can even go for 85-90% if you want too, they will love it. I love to have that for the whole growing stage. When you go into flowering start with like 65 and end with like 45-50%, dont go to low because you can get diseases/molts and such. I see you are using Canna vega nutrients, i really like to grow with that as well. Make sure you are not giving to much since your plant(s) are still a seedling. If you have proper soil you don't have to feed that much in the first 2-3weeks besides water and like a root nutrient. TIP: since you like to use Canna, you should buy CANNA CURE, its a spray that you can use to spray your plants with ( only spray when the lights are off). It is really good for your leaves, it holds some nutrients and it is also good against many problems like insects or molts and more :) Have fun growing :)

40% is kind of low for flower especially the first 3-4 weeks, but it also depends on your temps. If you have higher temps, then higher humidity is better for plant respiration. If your VPD is too low or high, you will see deficiencies due to improper VPD and think it is feed related. Only reason people recommend going so low at the end of flower is because they are worried about mold, but with good airflow you shouldn't see mold on the vast majority of strains until 65%+. If I am under 62% I have 0 worries of mold. Good luck!

Absolutely perfect plan... Go for it!! Good luck!