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?
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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!