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2 1/2 feet awayPurple stems is usually an indication of a lack of P
Adding CaMg to every watering will help the plant take up more of the P + K that is already present
Don't know whether you are doing LST or whatever, but I'd top her soon as poss before she gets too leggy
How far away/Wattage of your light source?
No, but it got me through the seedling stageAre you pHing your tap water?
pH 6.3 is what u need for your waterAre you pHing your tap water?
What happened to no need to argue about it?Btw, @Sueet here's an interesting article on substrate pH levels for cannabis which you might find useful. It was published in Cannabis Business Times in 2019. New Research Results: Optimal pH for Cannabis
The tolerable substrate (soil) pH range for cannabis appear to be between pH 5 to 7, with a narrower optimal range being around 5.5 to 6.5, according to NCSU's findings,
The preliminary results of NCSU’s research imply that vegetative stock plants of cannabis have a wide substrate pH range in which the plants will optimally grow. That range appears to be as wide as pH 5.0 to 7.0. Based on experience with other species, a narrower range of 5.5 to 6.5 may be more appropriate to target, as this will allow growers to more easily adjust as pH approaches the ends of the targeted range.
That range can be fine-tuned to an even narrower range of 5.8 to 6.2, thereby avoiding most of the lockout issues we all have to deal with, particularly when using bottled synthetic nute concentrates (which I avoid by using organic nutrient materials with a soil pH of 6.0 to 6.5 and giving plain mineral water @ around pH 7).
Here's another really great article on avoiding lockout: 3 Tips to Avoid Nutrient Lockout in Cannabis
@minimee1108 your plants look good, enjoy your grow!
Emeraldo
What happened to no need to argue about it?