What may be the cause of this?

[noobiegrow]

I'm currently about 7 weeks into flower, the flowers look and smell great, stickier than boogers but some leaves just don't look too great. Here is some info.

RDWC system
78-81 degrees in the room
humidity 45%
water temp constant 64.7 degrees
PH 5.8-6.1
PPM 600ish
feeding Ionic bloom 1 part and Ionic PK booster and cal-mag weekly
I was thinking wind burn? Because the (2) fans I have on either end of the room is hitting the plants directly.

On a brighter side, these 2 plants are pretty tall, one is 7'5 ft and the other is closer to 8 foot. Sorry for the pic being sideways, but if it looks confusing, its a pic of the room from outside of the grow room itself.

 

[noobiegrow]

No one?

 

[growitsfun]

Not enough light...maybe. What size containers? Nutes soil or ?

 

[growitsfun]

Wind burn is more tristed looking..that looks like my leaves when i got PM

 

[growitsfun]

Also are those leaves on the lower half of the tree?

 

[noobiegrow]

No. They are the top leaves. They are in 5 gallon buckets in a rdwc system. The leaves never looked like this until they went into flower. You can look at my grow journal and all leaves looked fine and healthy up until the last few weeks they have left.


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[noobiegrow]

Well not just the top leaves but all over the plants. The pics are just of the tops


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[noobiegrow]

And before you ask, strain is unknown. But there are 3 different strains and all are doing the same but the biggest plant seems to be doing it more than the other two plants.


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[growitsfun]

Could be copper or molybdenum or w.e def also looks like a mixture

 

[growitsfun]

Well not just the top leaves but all over the plants. The pics are just of the tops


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Go here check it out.

https://www.thenug.com/galleries/diagnose-your-sick-marijuana-plants

 

[noobiegrow]

The leaves are drying and get crisp and flake right off.


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[growitsfun]

Also how do the roots look?

 

[growitsfun]

Hey can you take a pic w/o the led light

 

[noobiegrow]

Roots look great. But after looking at the chart it looks most similar to phosphorus def. but I've been using bloom feed plus PK booster.


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[noobiegrow]

I can tomorrow. It's in sleep mode right now. Thank you thus far for your help.


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[growitsfun]

Np man ill check back in the am hopefully we cam figure it out. Also how many grows have you done hydro?

 

[noobiegrow]

This is my first one. Well my first grow period. So everything is new to me or else I wouldn't have let them grow to 8 feet tall. Lol


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[noobiegrow]

Just did a bit of reading and dove in head first. This is my first real problem that I encountered during this venture. I made plenty of mistakes but hey what noobie hasn't? I will do a few things quite differently my next go round. But mostly by the book (from what I've read on the Internet). Air movement, temp at 78, ph 5.5-60, water temp constant 63-64 degrees. Humidity at 70ish in veg and down to 40-50 during flower. The basics I guess.


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[noobiegrow]

Here you go @growitsfun

 

[growitsfun]

Here you go @growitsfun

What is your ph? Either your ph is off or your over fertilizing. Do you have access to the roots? If you do send me a picture of them.