I am currently growing 3 Girls Scout Cookies ans 2 Gelato's- all autoflowers. Im in week 3 of flower. I fed them today and the PPM run off was approx. 116 on 4 plants but 1 GSC was 759 (where it should be). I double checked the other 4 runoff PPM's and still 116ish. All plants look good with no issues. Any ideas?
What was the PPM of the nutrient mix going into the medium? Are you in soil or coco coir?
Hello- Im in soil and I did not PPM the nut mix. Im using Fox farms nuts 1/2 str. I mixed 3 gallons, all the same and gave it equally among the plants.
That's really strange that your PPM meter is reading that low. 116 PPM is next to nothing; many growers tap water is higher than that. My gut instinct is telling me there may be something wrong with your PPM meter.
@Mr. Grow It ok thats what I was thinking too- thanks for the response!