Is it safe to switch nuts in veg ?

I’ve been using advanced nutrients 3 part pH perfect and I just got the Connoisseur Line from advance I’m in week 3 of veg will it mess my plants ? Should I give them a good flush before switching ? Or should I keep going with new nutrients as normal

I'm wondering about this too.

yes you should flush you plants if you are changing nutrients i do and it doesnt hurt them. i normally flush then 12 hours later start them on the new nutrients and then restart your feeding schedule

Yes no problem at all
No trick too it
Just dump the old res, rinse it out
Make the new res