Nutrient burn vs deficiency

[Learningthebasics27]

Week 4 of flower.
Runoff ph 6.0
Runoff ppm 1100

Growing in promix.

My last feed was 1000ppm 5.8 ph going in.

Using advanced nutrients. I’m curious if this is over feeding or a deficiency. I heard I probably want to up my base nutrients as I am only feeding 50% strength but if I increase my base my ppm will increase drastically. Just wondering if I should feed heavy next time or light.

 

[labexperiment]

What is the ppm of the run off? You may need to flush to remove excess nutrient/salt build up.

 

[zeroday]

5.8ph in Promix? I thought it should be up around 6.3-6.5?

 

[labexperiment]

Yes 5.8 - 6.3 in promix, or Sunshine #4. They are considered soil-less mixes and are to be treated like hydro grows.

 

[Learningthebasics27]

What is the ppm of the run off? You may need to flush to remove excess nutrient/salt build up.

the ppm of runoff is 1100

 

[labexperiment]

Oh DOH! I'm having a bad day, it seems missed that in your initial post sorry. The ppm at runoff is fine. I would say it is a deficiency but am not sure what to recommend as your ppm is at a good level now. Maybe drop the N and increase calmag, p and k, to maintain the ppm you are currently at.

 

[flashmp3]

I ve been using advanced nutrients full line for two years and realized the nuts are strong so really don't need to use a lot. In my last outdoor grow I never exceeded 1000ppm in flowering and this. I wouldn't change the feeding but would try to water with pH 6 for a couple days before adding anything. Most of the time pH is the trouble and during flowering it needs to be a bit higher than veg