I agree with Venom on this subject. One of my WIFIs was very nute sensitive in veg, but has taken bloom nutes more in stride. I never pump them too high though. I'm on week 6 and I just took them over 1000 ppm for the first time the other day. No need to pump the nutes too high, only causes problems.
Yea Venom is rite.. It's all about what pheno u got.. My WiFi#1 don't like 2 eat very much in veg 400 ppm max if I go over that my leaf tips start 2 curl up & look like a new leaf on a Saco palm.. But when I flower she really like 2 eat..