Dwc rez change and smt gone seriously wrong!

[shiva71]

Hi
Put my 1 month old DP Strawberry Cough into her proper tent yesterday, did a rez change and wtf happened, dramatic curling up edges of biggest fan leaves, this is super sudden she was looking great yesterday. She had about 600ppm of Canna Flores and a bit of Rhizo 2ml/litre, pH6, thats it.
2 possible things, the pH jumped to 7 overnight, and also humidity dropped too low, about 35% so im thinking/hoping it was one of those. Or something in the bucket?
I rinsed the bucket, and refiled bucket 650ppm 5.8pH.
QB288 about 36' away, really dont think its light related. Temps 25%.
Any ideas?
Thanks!!

 

[shiva71]

Bump...
The large fan leaves are totally toast, they went from being fine to dead like crispy dead in less than 24 hours - ???
It is visible on other leaves but the rest of the plant doesnt seem too bad...
25°, 40%RH, ppm670 and dropping pH6 and rising.
Some new growth is starting to claw, this happened on last grow, nitrogen toxicity i dunno if this has anything to do with the sudden death of the fan leaves...?
Anyone...?

 

[70's natureboy]

They don't like your nutes for some reason. I have no experience with your nutes but your ec meter may be off. When I try different nutes and start getting weird results I put them in some Lucas Formula to revive them.

 

[shiva71]

Hmmm ok thanks for that...this all started when i put her in a different tent and put her in a big bucket (i start her off in smaller one)...i have 2 different humidity meters and they dont read the same, one had it as low as 25% in the new tent. Pretty much the only thing i did differently was add the Rhizotonic, nutes stayed more or less the same from the old bucket to the new one...its just super weird, the leaves that are affected are absolutely destroyed, within 24 hours, the rest seem ok...
Will check ph ppm meters.
Cheers!

 

[MrGreenFingers99]

Looks like you have some kind of lockout as the new growth is feeding on the old leaves, make sure your PH meter is calibrated but my bet would be a root issue, are you running bennies or sterile, post a pic of under the hood.

 

[shiva71]

Roots seem ok...
Im thinking maybe 24 hours just plain pH'd water...?

 

[MrGreenFingers99]

Roots seem ok...
Im thinking maybe 24 hours just plain pH'd water...?
View attachment 4564330

Roots look great! You sure your PH meter is good? Just doesnt look like nute burn but what is your feeding schedule etc?

 

[MrGreenFingers99]

Sorry I've seen what your feeding now, 600 is maybe a little high but it shouldn't cause that! My guess is its PH related with you not being able to get it stable, if it was me i would probably try a lower feed maybe 300-400 ppm, I always find once you find the correct feeding ppm the PH stays pretty stable.

 

[fartoblue]

Do you have a fan blowing directly at the plant?

 

[fragileassassin]

-That low of RH is not good for how much light is on that plant. If it is 25% you need to bring it WAY up.
-I cant see anything in the pics and no mention of anything.. Air or water pump? where and what is it?
-As mentioned already, that fan is no good mounted that close to the plant in a fixed position. I NEEDS to oscillate or be far enough away from the plants that they just get a gentle breeze.
If it started going bad after you changed things. Figure out every detail thats different and one of those is likely what caused it.

 

[Jrmy_1]

Agree, could be humidity. Humidity meters can be off too. Could be possibly lower. I'm newb so just guessing. Seems like one of your meters might be off. Try spraying with RO water and see if it helps.

 

[shiva71]

Ok thanks guys.
pH meter checked, calibrated, double checked, that's ok. Stable overnight at 6, I think I can eliminate that.
Need to get ppm calibration solution. I have 2 meters, they are about 130 out, but that shouldn't matter a huge deal.
I need to stop giving you guys ppm including the 200 of my tap water. So in reality she got about 450, which has dropped to 400 in 36 hours. 450 seems very low. If the lower of the 2 pens I have is right then it's more like 300. The damage looks like a deficiency to me.
So i'm very tempted to whack the ppm up to at least 600 and see how she responds...what do you think?
Cheers!

 

[shiva71]

[QUOTE="fragileassassin, post: 15527765, member: 995]
If it started going bad after you changed things. Figure out every detail thats different and one of those is likely what caused it.
[/QUOTE]
Yes, it did, dramatically so. Here's what changed:
- new tent
- switched from 4 x CFLs to 135w QB
- moved from bedroom to lounge (this is possible cause of low humidity)
- 2 more air stones added to bucket
- new bucket
- added Rhizo 2ml/litre
Man I dunno. I mess around with a lot of nasty liquids, isopropyl, bleach etc...I'm just wondering if somehow somewhere it got contaminated with something....

 

[kmog33]

Ok thanks guys.
pH meter checked, calibrated, double checked, that's ok. Stable overnight at 6, I think I can eliminate that.
Need to get ppm calibration solution. I have 2 meters, they are about 130 out, but that shouldn't matter a huge deal.
I need to stop giving you guys ppm including the 200 of my tap water. So in reality she got about 450, which has dropped to 400 in 36 hours. 450 seems very low. If the lower of the 2 pens I have is right then it's more like 300. The damage looks like a deficiency to me.
So i'm very tempted to whack the ppm up to at least 600 and see how she responds...what do you think?
Cheers!

Total ppm is what matters, it’s not like the plant ignores the calcium, chlorine, etc in the water. Generally when using tap water I need less cal mag than when using ro.

500-750 ppm works for just about anything.
If your res temps are good, you have sufficient air, balanced solution(low is fine), rizos...leave it alone for a couple days and see what happens. Pictures help with updates when you’re talking about problems with your plants

 

[shiva71]

Total ppm is what matters, it’s not like the plant ignores the calcium, chlorine, etc in the water. Generally when using tap water I need less cal mag than when using ro.

500-750 ppm works for just about anything.
If your res temps are good, you have sufficient air, balanced solution(low is fine), rizos...leave it alone for a couple days and see what happens. Pictures help with updates when you’re talking about problems with your plants

Yes sorry should have done so...heres how she was this morning...as i say it looks like a deficiency to me but im probably wrong!

 

[joe9000]

as said before keep nutes low,but looks like ph swing symptoms to me.

 

[shiva71]

Cheers a few days ago it jumped up to 7, then swung down to 5.2 but its been stable around 5.8 - 6 for 2 days now. Calibrated meter this morning, its bang on...yes looks like a ph issue but as i say ive checked everything, take a reading every 4 hours or so...

 

[MrGreenFingers99]

Cheers a few days ago it jumped up to 7, then swung down to 5.2 but its been stable around 5.8 - 6 for 2 days now. Calibrated meter this morning, its bang on...yes looks like a ph issue but as i say ive checked everything, take a reading every 4 hours or so...

Hard one to figure out! I used to use canna aqua Vega - how many ml/l are you using as probably only need to be on 2ml/l atm - thing is first set of pics you posted in natural light look fairly dark green which is why I dont think its deficient from the amount of nutes your using whereas the pics you are posting now the leaves do look quite light but mine do under my quantum boards to, I'm still leaning towards lockout from off PH so now its settled the new growth coming through should be OK.

The thing you dont want to do is starting changing lots of things because you wont know which changes worked and which didnt, I would just leave them be for a few days now the PH is stable.

 

[kmog33]

Looks like iron or some other macro to me. They definitely Could use more n, but is probably from lockout. Will take a couple dats to recover. Watch new growth.

 

[shiva71]

Those who said pH, i think might be right. I havent been paying attention to which way its swinging. Every other grow its swung up - so i mix low 5.8 and bring it down when it reaches 6.3. Ive been starting low this time, then it swings down, i think thats my problem. Need to mix it high. Damage has got worse but crucially it hasnt spread.
There is some clawing going on, i had this last time, i think its nitrogen toxicity, Canna Flores is 5-3-8 i dunno is that particularly high in N that would cause toxicity?