Not sure if it is a problem, but...

Plant is 2 and a half weeks old, it has 4 sets of leaves(almost five) and there is no space between sets. I mean there isnt even 1mm between them. Looks like they grow out all from one spot. Plant simply isnt getting any taller. And i'm a bit confused, because i have 2 NL plants, and they are completely diferent. First one is that, which i just described above, it has really dark green color, and the other is a bit taller with 5 sets of leaves, and there is descent space between them, and it is much brighter than first one.
So what's wrong with first plant, an why are they so diferent?

2 NL plants one of them is healthy but the other is in same, box, same water, same soil, but its getting yellowish lighter and now theese brown spots


Whats happening?

Check your PH, I bet you have an imbalance. Looks like you might have P lockout. Even though only one is showing right now, my bet is the others will start showing the same symptoms soon. What is the PH of the water you have been using? What is your runoff PH? Have you been using nutes? What kind?

As for the deformed leaves or whatever, I wouldn't worry about it, they will normal out over time. Some plants produce odd leaf patterns sometimes, and usually just grow out of it. Your more pressing problem now is the possible PH issue.

GS

Thanks for advice.
PH was too high - 7.5 to 8. I hope that's the reason of bright leaves and brown spots. Using apple vinegar for bringing down ph. I'm not using nutes yet.

The ph doesn't seem too bad, a tad high but workable. As for the apple cider vin, I would use something made for evening out your ph cause these home solutions for fixing ph never seem to work right for very long. You need to start feeding them asap too

Ok one more question about the bottom leaves, they're getting browner and dryer, could i just tear them off, so the disease won't go up the plant?

Plant seems to recover now. But i was wondering, if in veg stage i have to feed them more nitrogen, and in the flowering stage more phosphorus and potassium, does this means, that in veg stage plants will not be using nitrogen at all?

jfep said:

Plant seems to recover now. But i was wondering, if in veg stage i have to feed them more nitrogen, and in the flowering stage more phosphorus and potassium, does this means, that in veg stage plants will not be using nitrogen at all?

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the plant will use nitrogen throughout its whole life cycle, the only thing that changes is the amounts it needs during its life cycle. There is an interesting thread on here about plant defficiencies, you will easily find it. I believe this is the problem. Also the uneven growth is typical of growing from seed, nothing to worry abouut, but what i would worry about is that if youre growing from seed, grow more than just these two. Would be a sucker to nurture them through life only to find a couple of blokes with big balls eating youre precious nutrients!

Thanks, appreciate the info. Deffinately gonna read that thread. And about the seeds, i got feminized, so nothing to worry about there.

As mentioned, you need to use ph up and down, not kitchen ingredients. Stuff like that could continue to change ph over time, and you're getting false readings. There's tons of things that will 'change' your ph, but with no stability.

Water problem solved, i can use rain water, because it has perfect ph.