Help Brown Crispy. Tips and Edges. Deformed growth and old is growth is dieing.

What makes them brown and crispy with dark veins.


I am doing dwc with 3 girls.



Some of them have gotten so crispy


My ppm is at 550 and they are have been vegged for a while and are now in mature. I am using distilled water which has no ppm. Foxfarm Trio without the extra supps.

They look like they have been burned but the temp has been 75-82f.

I got one fan blowing air in and a in line fan in the window pulling cold air in from outside and a fan above the lights blowing air out.

Humidity has recently been high but it fluctuates around 40-50% since it has been raining.

I have been supplementing with Botanicare Cal Mag plus right now there is 5 tsps for 6 gals but maybe that is not enough? Foxfarm Hydro Trio is a 3 part mix where Tiger Bloom is the "bloom" nutrients with higher P than N. I used 7-8 tsps for 6-gal of water in the res solution.

Also I put 5.5 tsp Grow Big and 2 tbsp Big Bloom.

You didnt say anything about ph? And you say at first u r using just the trio and no supplements then u say u have added calmag, and 5tsp for 6 gal is a lot, i use less than half of that. It appears to be burnt, and by burnt we mean too much nutes, not too hot.

Ph has been 5.5-6.0. It never raises past 6.1 and has been relatively stable. I have to adjust it twice a day once when the lights are on and once right before they turn off. I use less than 1/4 tsp of GH ph down. Temps have been 75-82 f and I am using CFLs.

The thermometer is sitting on top of my res lid.

I meant without FF supps they recommend using their supps but I didn't have enough to buy them.

Is it? People have told me I needed more of it bc their looks to be a mag deficiency but now I am unsure. But considering the ppm is at 500 in distilled water isn't that a safe amount?

Could it be a nitrogen toxicity that is causing the problems? I do have a lot of N in their 3% from FF Grow Big which is at 5.5 tsp and 5 tsps of cal mag which has 2% N. I have been doing some research and came across this description of Nitrogen Toxicity here: http://www.growweedeasy.com/marijuana-symptoms

Might help ya!
Beech

What if they look like one or more of those pictures? I def see Phosphorus deficiency in which the veins are dark but the in between the veins there is some yellowing happening. It looks like it is progressing. I also see some leaves which resemble the Potassium (K) deficiency/Magnesium Deficiency above.

Also my stems do seem thinner. Some of the stems of the fan leaves show red streaks. The browning/crispiness seems to be effecting my fan leaves the most on all three plants.

I don't see how it can be a phosphorus or magnesium issue considering the amount that is in the solution...Is there a easier two part grow/bloom nute brand I can switch to because I can't seem to understand FF.

Damn man, I would suggest just giving them plain PH'd water for a week or so until they are showing signs of recovery....

ganjaman87 said:

Damn man, I would suggest just giving them plain PH'd water for a week or so until they are showing signs of recovery....

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Wouldn't that make them more deficient?

What type of grow is it? Hydro? How long has this been going on? Did it start with the lower leaves and move upwards? Your fluctuation in ph is an issue also, why does it need adjustment twice a day? It looks to me to be a nitro burn, but with ppm of 520 for hydro that is very strange, if not impossible. It doesn't look like a cal/mag issue to me, so it all points to nutes, unless you have an insect problem which I am sure you checked for.

learning05 said:

Wouldn't that make them more deficient?

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I mean.......maybe? But honestly from experience, when giving plants plain water after showing deficiencies they usually start to recover and grow way better. Just my 2 cents though....But also another thing I can think of is that your plants are way too mature to only be giving them 550 PPM at this point. Those buds look like they are about 6-7 weeks flowering your PPM should be ATLEAST 1000PPM at this point of flowering 550 is WAY too low at this point in the grow. that is why I would suggest giving them plain water for a week or so and then giving them nutes again at a higher PPM

And also if your PH never rises above 6.1 why are you adjusting it daily? if it is never going past 6.1 then I would just leave it in the 5.8-6.1 range

Jimdamick said:

What type of grow is it? Hydro? How long has this been going on? Did it start with the lower leaves and move upwards? Your fluctuation in ph is an issue also, why does it need adjustment twice a day? It looks to me to be a nitro burn, but with ppm of 520 for hydro that is very strange, if not impossible. It doesn't look like a cal/mag issue to me, so it all points to nutes, unless you have an insect problem which I am sure you checked for.

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It is a hydro deep water culture grow with 2 air pumps + stones in a 6 gal res. Three girls sharing a res and their roots are tangled. It did start with the lower growth and eventually affected the upper growth. For the ph, I don't always adjust it twice a day. Some days I do it only once since the ph never rises beyond 6.1. When it gets to 6.1 I lower it to a 5.6.

That is what is confusing me also. The ppms seem low and people have been saying I need to raise them. I may have slightly higher levels of N in the res now bc I used both Cal-Mag + and FF Gro for Big. I am thinking of doing another res change and reducing the amount of cal-mag + and increasing the amount of Tiger Bloom.

There are no signs of insects. I haven't seen any in the grow area or other areas for that matter.

ganjaman87 said:

I mean.......maybe? But honestly from experience, when giving plants plain water after showing deficiencies they usually start to recover and grow way better. Just my 2 cents though....But also another thing I can think of is that your plants are way too mature to only be giving them 550 PPM at this point. Those buds look like they are about 6-7 weeks flowering your PPM should be ATLEAST 1000PPM at this point of flowering 550 is WAY too low at this point in the grow. that is why I would suggest giving them plain water for a week or so and then giving them nutes again at a higher PPM

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Plain water for a WEEK? Sorry I don't understand how that would help if they are deficient. Also since they are flowering and already stressed, wouldn't that be to much for them to handle? The buds are about 5 weeks from switching to 12/12. I know my ppm is low that is why I am so confused. So If I raise them higher using the FF nutes. I should be using more of the Tiger Bloom then the Grow Big right? The big bloom bottle has the lowest npk and if I am correct is the micro.

ganjaman87 said:

And also if your PH never rises above 6.1 why are you adjusting it daily? if it is never going past 6.1 then I would just leave it in the 5.8-6.1 range

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Some days I do it only once since the ph never rises beyond 6.1. When it see it at 6.1 usually right before the lights go off, I lower it to a 5.6.

How does the root system look, nice and clean or do you have a lot of brown roots? I would do a system flush with FloraSheild or a similar product, and bring your ppm up to 700 for now, until you see that they are recovering. You can cut off those brown or half dead leaves because they aren't coming back. That's about all I can think of for now, and good luck.

learning05 said:

Plain water for a WEEK? Sorry I don't understand how that would help if they are deficient. Also since they are flowering and already stressed, wouldn't that be to much for them to handle? The buds are about 5 weeks from switching to 12/12. I know my ppm is low that is why I am so confused. So If I raise them higher using the FF nutes. I should be using more of the Tiger Bloom then the Grow Big right? The big bloom bottle has the lowest npk and if I am correct is the micro.

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No if you give them plain water that wouldnt be too much for them to handle apparently whatever you're doing right now is too much for them to handle lol. I suggest plain water incase you actually have salt build up or something....You dont want to just UP the nutes and then the problem continues or gets worse..Trust me man plain water WILL NOT hurt your plants I gaurantee they will start looking better, I may not be Jeorge cervantes but I do have several successful grows under my belt for the last 3 plus years and I've had similar problems in the past man you dont want to just boost up the PPM and risk them getting worse they are already doing bad plain water would do nothing but help them at this point. Good luck on your grow though

Jimdamick said:

How does the root system look, nice and clean or do you have a lot of brown roots? I would do a system flush with FloraSheild or a similar product, and bring your ppm up to 700 for now, until you see that they are recovering. You can cut off those brown or half dead leaves because they aren't coming back. That's about all I can think of for now, and good luck.

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Here are the roots. I was reading that your not supposed to cut the leafs if they are deficient as it uses those fan leaves to leach/compensate for the deficiency. But I am not sure, I don't want to waste energy either. If I cut them can I do it all at once? Also do I remove the stem entirely?

Here is a pic of the roots:

ganjaman87 said:

No if you give them plain water that wouldnt be too much for them to handle apparently whatever you're doing right now is too much for them to handle lol. I suggest plain water incase you actually have salt build up or something....You dont want to just UP the nutes and then the problem continues or gets worse..Trust me man plain water WILL NOT hurt your plants I gaurantee they will start looking better, I may not be Jeorge cervantes but I do have several successful grows under my belt for the last 3 plus years and I've had similar problems in the past man you dont want to just boost up the PPM and risk them getting worse they are already doing bad plain water would do nothing but help them at this point. Good luck on your grow though

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But majority of the nute burn you see is from when they were in veg tho. I flushed after I over-feed them then but didn't remove the damaged leaves. So that is why I have kept the PPMs on the lower end. So flushing with plain phed distilled water won't hurt them? Other people have suggested it to be a phosphorus deficiency and have said to add more of that.

My plants are very similar and the grow store here in CO said i have leaf septoria whic is a fungus. Check it out... Im on the plant problems page as well check out my post.

EastwoodSTI said:

My plants are very similar and the grow store here in CO said i have leaf septoria whic is a fungus. Check it out... Im on the plant problems page as well check out my post.

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I don't see any of the signs nor do I have circular spots. My leaves look to be browning from the tips to edges and working its way towards the stem. I think it is deficiency in my case.