amneziaHaze said:

Where did the decision come to use coco?

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Fotzenschlaeger said:

I was looking for ideal medium for both autoflowers and feminized seeds and I've red that coco-coir with perlite should be good... Which medium would you suggest then?

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Eledin said:

Tip burn is probably high nute dosage in such small plants, many people go half dose even with big plants. Coco is trickier, did it come buffered with any nutrients? Specially calcium? My understanding is that coco retains too much calcium so unless its properly buffered you need calmags for coco and some are better than others (I have little experience with coco). Is that the PH of your water after or before nutes? You should aim more towards 6,5 because 7 is not as good unless you have microorganisms in the coco. Tap water or RO? With tap water you might get away with no using calmag but with RO water you need to. How often do you water and what are the temps if you have them?

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amneziaHaze said:

But you added compost as well.you use coco alone or you use soil alone.combo is allways soo random.
I use water.

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Fotzenschlaeger said:

It's rain water and Ph was measured after the nutes. I'm watering mostly every second day, depends on if the top layer of soil is alredy dried or not... And temperature in tent ist about 24°C. I thought that I'm giving them too little nutes because of pale color, I thought that nutes burn is when the leaves are dark green colored and tips are burned

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amneziaHaze said:

But you added compost as well.you use coco alone or you use soil alone.combo is allways soo random.
I use water.

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Fotzenschlaeger said:

Well I thought that ideal is to mix both coco/perlite and soil because some users were experiencing good results. On the other hand I've red that only coco alone is not good, so now I'm little bit confused

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Fotzenschlaeger said:

Well I thought that ideal is to mix both coco/perlite and soil because some users were experiencing good results. On the other hand I've red that only coco alone is not good, so now I'm little bit confused

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amneziaHaze said:

Havent seen many grows on the forum with mixes.all of them i saw allways struggled. Think of it coco is inert media that needs to get watered as much as 5 times a day and soil is once a week.compost has shit tone of nutes coco has 0.do you water with water or with nutes?

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Eledin said:

Red circles is nute burn, the purple circles is overwatering, same as the pale yellow and the lack of growth. Thats my guess at least.

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Eledin said:

I wouldnt flush unless they start getting worse, you could 1/4 a dose for a bit with the nutes too. As soon as the plant starts getting hungry the lower leaves will yellow even more thats what I look for to know if my plant is hungry, there's nothing wrong with a couple of fan leaves on the bottom that are not recieving as much light getting yellow, I usually lollipop them anyway so theyre gone for flower. If it gets worse even without feeding nutes or feeding very little, probably a good idea to flush but not for more than a day, do it in one sitting so the roots dont keep suffering.

Also water less often, feeling the weight of the pot when its watered and think that more or less half the weight is gotta be gone, not so much as half but it should be noticeable lighter. If you are in doubt, dont water, because when theyre dryish you can tell 100%. Ideally you dont want it very dry but sometimes happens and the leaves will get droopy, thats another sign to get an idea on how often they want water.

That said Im not 100% sure if thats the problem, Im just telling you what I would think it is and what I would do. It could also be a problem with the soil having bad ph if the compost was too acidic or if its too hot on nutrients which is why I think that flushing would be a good idea if they keep getting worse. But if they can take it, let em.

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