600 ppm during 4th week of flowering to little?

I'm growing White widow and white castle,

Right now Im at 600 ppm of nutrients. I feel like I have a pretty big safety window from nutrient burn. I hear about people being at 1000-1500 ppm durning flowering.

My plants are 2 1/2 to 3 feet tall. Would it be safe enough to jump that ppm up to around 800 to 900 ppm and still have a nice safety window? I'm just scared because if I start making mistakes in flowering, I know it will really hurt my yeild.

My nutrients Im using are General hydropinics 3 part system along with big bud and bud candy from advanced. I'm using R/O water starting with zero PPM

Thanks for any advice!

ya way week. ive run 3k ppm to a seed. food dont burn. lack of food does,. could be lots causing lack of food and tip burn, most cases is ph is off in the medium so they cant eat.

for my by 4 to 5 weeks flower im at full dose. 1200 to 1400 ppm. strain and food dependant

dont jump right to 900 though. id go half way there then to full.

i do hempy buckets and i always ramp up my nutes and pay attention to the plants and what there reaction is this way its easier to find the sweet spot as far as feeding goes. my two cents anway.

Alright thanks guys. I just always heard use about half nurtients of what the back of the bottle says, I feel pretty confident they will do okay and a higher ppm. So I will go ahead and jump it up a bit, now that my plants are stable and growing great.

Bump it up slowly. When the plants start to show burn back off a bit and you should be there. Every strain tolerates nute loads differently so you need to find what you particular ones like. When you get it figured out let us know. I am looking at WW as well.

Roger will do.

you are way too low I run 1400 in veg and even more during bloom