What are the recommended ppm for an autoflower? I did a light feeding tonight of florabloom. .6 ml per 1.75 gallons of distilled water. 60 ppm. I watered and tested runoff ppm. One plant was 747 ppm, the other was 1650 ppm. This seems really high considering I’ve only been feeding ppm around 150. I’ve read that autoflowers require a lot less nutrients than photoperiods but I am not sure what my target ppm range is. Also I’ve been giving water with a ph of 6.3 and tonight runoff was 5.7, last time it was 5.9. Is this normal? How high should I make the ph in water in order to bring the soil ph up within range? Thank you for your help.
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@Not2SureYet knows more about autos than I do.
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I will only offer what I have found o be true on my grows. Autos do not like fed heavy. They may seem to do ok. But for me. It really slows down their growth. I use the flora trio combo. I feed at about 250ppm starting. I am in week 5 of veg now and am up to about 380ppm. By the time I am in full flower. I will be about 650 ppm.
When I see the tips starting to burn. I know I need to back off the feed about 20% For cal mag. I start with 2.5 ml per gallon and then get to about 1.25 at about week 5. And that is for coco which steals the cal mag. Also, If you feed lighter. You may never need to flush till the end. I have never used soil. So I can’t say for there. I can say. The few times I have gotten close to the 1000ppm range when feeding with photos. It was not going to end well.
This is all just my O2 for what I have found in my grows. 
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