Oh sorry I missed that you are plucking at them. I save that for My guitar. You will need to stop stressing them. Have a look at My grow and the Indica dom. that I am growing it's the nature of the beast.
Second people that grow in soil have no idea what you are talking about with PPM's. You will do great at 400-500 in veg but, keep it low for the week and be patient. I really like this range for the DWC as the PPM's do not get to high when the plant drinks all the water and takes up no nuts. You should see fluctuations
up of 100-150PPM. Later on it wont rise (meaning the plant is eating) so, the next time you mix raise the nuts another 150PPM. I hope that makes sense.
If you can bring up your RH that would be great for the same reasons I stated yesterday.
You will know that it is dialed in
I grew My last plant in a Water Farm using only Flora Nova Bloom from start to finish. Just one bottle!
You should look up scottyballs pineapple express grow that's where I learned how to use a DWC(Water Farm)
All of the other info that I know and share is from groweedeasy they have way more answers then I have
Peace