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Black_Magic started grow question 5 years ago
Can some tell me please after last last two feeds she got bit burn tips at some lives and that
I found today one lieve with this problem
For me it’s look like Mag or P problem
RQS C My first grow
11 weeks
RQS C My first grow Black_Magic
Royal Cookies
74 comments · 5 years ago
Week 5
Leaves. Color - Dark-brown
Removed answered grow question 5 years ago
First, are you sure you are giving the equivalent of 1 liter of water per 24 hours? If that's true, I think for starters you are giving them too much water. I think that for a 7.5 litter pot 1.2 to 1.5 liters of water should soak the media pretty good and it should last you 5 to 7 days, before needing another watering.
Second, in soil I don't recommend that you go over 1.4 EC and that's on the peak of flowering and you are at 1.6 EC. It is better to err on the side of caution and feed too little, rather than too much; a little deficiency won't impede flowering, but overdose can be disastrous.
Third, with the first two points in mind, you appear to be feeding too much, too often and most probably a combination of both. Not only you should feed less regarding nutrient strength, also you should feed less often, like once every 7 to 10 days. On last grow, I watered and fed once every week (after 8 weeks of no feeding) and had some (benign) bugs due moist soil conditions. This time I'll extend the time between watering to 10 days.
The pictures you posted show really dark green leaves with rust spots and yellowing veins. Looks like nitrogen toxicity with potassium overdose that's in turn locking out other secondary nutrients.
I would flush the soil and no nutrients for a week before starting them again with a 1 EC strength solution.
Experimentgreen answered grow question 5 years ago
This may sound absolutely simple of me...but I was just looking at your photos for pleasure and my first thought was necessity of a cal-mag supplement. How often are you flushing with just some plain water as well? Perhaps 1 on nutes 1 off nutes?
I hope it resolves itself and gets better quickly for you.