Ppm for dwc is it sopposed to be lower then normal

I'm on week 3 day 5 running 650 ppm advanced next res change was going to up it to 1000 my buddy's running ebb and flow with same strains at 1500 but I'm running dwc so I'm worried about burning them any advice first time hydro dwc grow any help would be appreciated

try 800 before 1000. I rarely go above 1200

K ya I think that's what I'm gunma do they don't look hungry at all besides the new top leaves are a Lil yellow like a neon yellow green fig it cuz of less nitrogen in bloom and the blue dream stems are purple but they have been the entire time have blue dream s1 and holy grail sfv f1 I believe

Thanks man

If EC rises throughout the week or your plant shows signs of overfert then lower dosage. If EC lowers a lot and/or shows signs of underfert then increase dosage. If EC drops a bit or stays the same and/or shows signs of a healthy plant then leave it alone. Don't do what someone else does. In hydro if you can't read the plant you have the luxury of easily reading the EC, so use it to your advantage and don't just guess.

They look really healthy and I'm at 650ish the tops a bit yellow on the grail might try pushing it up a little on next change mabey try 700 see if the light yellow goes away think its just that the grail likes the nitrogen cause the rest are a lush green