nute burn?? pics*****

wizzkid

Active Member
well i havnt posted in a while but my babies are sick, last tuesday i gave them nutes, im using an 18-18-21 nutrient solution. here are some pics from today; also im using 2 23w and 2 46w cfl 18/6 cycle plants are just over 7 weeks old. thx in advance for any info;





 

Drio

Well-Known Member
Given the plans are all showing similar symptoms id say its a problem with the water contents.

Flush , Check PH , Wait 2 days and then give them a mild amount of nutrients and wait.

Recovery :

1. If they recover fast they most likely needed water but i find that unlikely given that all of the plants have the same symptom.
2. If they start showing progress in the first 2 days stop giving them nutrients and focus on your watering cycle.
3. If they show no signs of recovery the first 2 days the problem is most likely lack of nutrients , - Feed them but be careful of the amount , - When i have deficiency problems i try and increase the amount i water each time rather than strengthening the solution significantly.
 

highpsi

Well-Known Member
First things first. Get them transplanted into bigger pots immediately. They are most definitely root bound, the nutes just added insult to injury. After you've transplanted, give them a good watering with PLAIN WATER and wait for them to dry out before the next watering. They should make a good recovery in about a week.
 

peach

Well-Known Member
Yep, nutrient burning.

Don't stress it, pretty much everyone's done it at some point. But you should try to sort it out.

First of all, stop feeding them the nutrient you already have. Rinse the soil through with 3 - 4 x it's volume of tap water.

You then want to sort out the nutrient. If you've made a big batch of it and it's too strong, do you remember how much nutrient you put in it? Or do you have a pen to test it? If you can remember how much you put in, double check it's the correct dilution (specially if you were baked when you worked it out). If you know it's miles off, you'll have a better idea of how much to water it down. If not, try ~20%.

Plants that big going onto nutrient for the first time won't necessarily want nut at full strength, and almost certainly not the boosted strength. You can go for 50% and get them used to 100% over two weeks. 100%+a bit extra is only really good when you know they're super resistant or once it's really dumping energy in flowering.

As someone's already said, you'll get slight burns on smaller plants even if you use 75 - 100%. But they should only be on the tips of the leaves really. What you've got looks too severe for them adjusting.

Forget about the burnt leaves, it'll be kind of hard to see if they're burning anymore.

Watch the new leaves right up near the top. Watch the tips for any yellow'ing / browning, that's the first sign that they're not 100% happy with the nutrient and you should back it off as soon as it appears, because it'll inevitably get worse if you leave it. Yellowing could be a few things, but with your prior burn, it's almost certainly going to be nutrient.

Nutrient is a less is more thing. Once you incinerate a lot of good leaves, they're useless. Running it a few percent weaker won't slow things down, it will keep the energy producing areas of the leaves. At 100%, you should only increase it slowly and watching the plant for any stress.

Also, are you adjusting your pH? If not, you might want to check it out.

Is that soil and perlite you're using there? I remember those days. I might still do another soil grow, something about it seems more wholesome. Two things anyway! Is your soil packed down? It looks quite fluffy at the surface but it's easy to pack soil and that can waterlog it under the surface. Also, run to waste with nutrient on coir or soil, you'll want to think about flushing it in the bath every week or two so it doesn't end up rammed with nutrient.

The one in the bottom left looks like an Oak tree. :D

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wizzkid

Active Member
hey guys thx for all the info, i havent watered them in a few days ima let them dry out then water them with a little bit of nutes tomorrow. Yes i know they are probalt root-bound and thats my next thing, but im waiting to come up on some pots and some soil. As far as pH i have a soil tester and it says my pH is around 7-7.2 i dont check it often but once i repot ill take more concern on it. One thing i trimmed off some of the big fan leaves that were burnt bad, dont know if that was a good idea or not but i only did it to 2 plants so im waiting to see if that helps. And the new growth on the plant looks good, nice and green looks healthy. And the oak tree(tomato) lol is absolutly thriving i love it.
 

beginnerbloomer

Well-Known Member
I personally wouldnt give em any nutes for at least a week or 2,ur more likely to do more damage even using small quantities, and not having any for a short period wont have any negative affects on em,it wouldnt hurt to get ur pH down a touch either.All the best.
 

peach

Well-Known Member
A pH of 7+ is way too high, you need to get that down! It also makes me wonder if you've been adding excess nutrient or the plants are locking up. If your pH is that high, the nutrients in the solution can't get into the roots easily.
 

Mcgician

Well-Known Member
A pH of 7+ is way too high, you need to get that down! It also makes me wonder if you've been adding excess nutrient or the plants are locking up. If your pH is that high, the nutrients in the solution can't get into the roots easily.
Precisely....the first thing you should ALWAYS check when encountering a situation like yours is to check pH first, then pay close attention to temperature/humidity, then nutrient solution. Somebody said "less is more", and I wholeheartedly back that philosophy. Also, make sure that when you do change something in your routine, you change one thing at a time, so that you can see the effect of that one particular change. Having too many variables to deal with will most likely confuse the issue and make it harder to discern the effects of the change.
 

jgreenbeast

Well-Known Member
Precisely....the first thing you should ALWAYS check when encountering a situation like yours is to check pH first, then pay close attention to temperature/humidity, then nutrient solution. Somebody said "less is more", and I wholeheartedly back that philosophy. Also, make sure that when you do change something in your routine, you change one thing at a time, so that you can see the effect of that one particular change. Having too many variables to deal with will most likely confuse the issue and make it harder to discern the effects of the change.
holy shit! I couldnt of said it better, Mcgician covered it mostly....
also u need more root room 4 those babies
 
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