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PPM How much???
Padrinostarted grow question 2 years ago
Does anyone have like a general rule of thumb when it comes to how much ppms auto flowers do best with and at what stages? I see all types of crazy numbers on line and am pretty confused about the whole ordeal. Thanks for any help!
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Ctrellis90answered grow question 2 years ago
Germinate. 0ppm
Week 1. 100ppm
Week 2. 200ppm
Week 3. 300ppm
Week 5. 400-450ppm
Week 6. 500-550ppm
Week 7. 550-600ppm
Week 8. 200ppm
Week 9. 0 ppm
This is a good average chart to use for auto's but just know every pheno is different and can handle a little more or a little less.
Hope this helps.
Ezzjaybruhanswered grow question 2 years ago
I’d recommend using the EC reading instead of PPM, because there are at least two different scales for conversion of EC to PPM
Because EC is the actual measurement that PPM is being calculated from.
1.0 EC can be 500 PPM or 700 PPM.. depending on the scale used by that company or grower. However - most do use the 500 scale.
As far as a rate of feed.. I have run autos, but don’t anymore because they are finicky as hell at times (among other reasons). BUT I would recommend around 1.0 (500ppm on the 500 scale) as a good medium and up to 1.4-1.6 (700-800ppm on 500 scale )in flower if it appears it can take it. I’ve fed 2.0 in hydro with autos in flower and that was a bit aggressive and gave some toxicities.
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