Brown marks on leaves

[kemppo]

Hello guys! I'm in need for some help in here.

I flushed the soil 4 days ago with water (ph 6.3). Yesterday everything was fine when i went to sleep. Now i woke up and saw some brown marks on the leaf's. I'm thinking PH problems, but i'm not sure. Haven't given them any nutrient's after flushing. There is only one leaf that looks that bad, and i think it's spreading on other leaf's.


Strain - Hybrid - Nirvana Indoor Mix feminized (5 seeds)
# of Plants - 2
Grow Type - Soil
Grow Stage - Vegetative 6week
Bucket Size - 60l (13gallon)
Lights - 1x90w LED, 2x 15w LED.
Nutrients - Substal NPK 6-1,3-5.
PH - 6
Room Temperature - 25-28c Lights on 20-24c Lights off.
Room Square Footage - Aprox 140cm x 60cm
Pests - None Known

I appreciate all your help!

 

[Happy Kitty]

Re: Brown marks on leaf's

Here's your photos for you, kemppo!

Looking great!

 

[Dusty Kiefers]

Re: Brown marks on leaf's

Looks good, the marks may be calcium def. There a great post here call plant and pest problem solver check it out. It explains a lot happy harvest to you.

 

[kemppo]

Re: Brown marks on leaf's

Yeah, calcium def sound's possible. Now i flushed plants again light nutrient solution. (Biobizz bloom, 1ml/l)

You guys have any idea, does Biobizz Bloom have any other nutrients in it beside N,P&K? I checked the bottle and website and cant find anything. Not sure if i need to buy Topmax to get some calcium and iron in that plant.

 

[Dusty Kiefers]

Re: Brown marks on leaf's

It should have all micros but im unfamiliar with them. If you use r.o. Water you may need to add cal mag supplement if tap water do you let it sit for a couple of days?

 

[kemppo]

Re: Brown marks on leaf's

I let water stand at least for 24 hours. When i'm ready to use water, i add the nutrients and adjust PH to about 6.8. I water the plants until extra water comes out from the bottom of the bucket.

 

[frankiez]

Re: Brown marks on leaf's

I also think for a Calcium deficency.... i suggest a run of Cal-Mag

 

[Dusty Kiefers]

Re: Brown marks on leaf's

Are you using coco coir

 

[kemppo]

Re: Brown marks on leaf's

Nope

 

[Dusty Kiefers]

Re: Brown marks on leaf's

has it gotten better or worse when you flush. If it got worse then I'd try some cal mag

 

[kemppo]

Re: Brown marks on leaf's

I'm not sure yet. I found few leaves with brown marks, but they are nothing compared to that one big mark (first picture). After i flushed it again with nutrients it started growing very very fast. I think i should wait for few day's and see. I was thinking to start 12/12 today. They have been in veg for 6 or 7 week's and the plant's are getting very high and wide.

 

[Dusty Kiefers]

Re: Brown marks on leaf's

Thats a good time to do it best of growing to you.

 

[kemppo]

Re: Brown marks on leaf's

Thanks bro!

I also noticed that leafs break "snap" kinda easily. And i'm kinda worrying about over watering. Sense i'm using LED light's the ground stays really wet. I flushed bushes like 3 days ago, and still top of the soil is wet...

 

[Dusty Kiefers]

Re: Brown marks on leaf's

When I use soil or coir I like to let soil dry out between waterings. I like to treat oxygen like a nutrient plants need it to live. Pluss you get a lot bigger root mass witch in turn leads to biger flowers. I would wait till at least top inch of soil is dry before watering agin.

 

[Dusty Kiefers]

Re: Brown marks on leaf's

Oh yea what kind of led do you have?

 

[kemppo]

I bought local 90W UFO LED. And two cheap 15w LEDs. It is 6 band and has 3w powerleds.

 

[Dusty Kiefers]

I lost tis blog. Kool on the lights im checking out a lush luminator at the moment its badaz

 

[kemppo]

Yeah. I'm going to buy 250w HPS lamp to help that led. Plant's are now been flowering for 2 weeks. Everything on top looks delicious, but lower buds aren't getting enough light to bud. I can post few pictures after the lights turn on.

 

[Dusty Kiefers]

Time tested hps. The led pannel I got cost a lot like five hundo but it truley is doing as good as hps its from lushledlighting.com only 190w and I got it in a three by four all by it self.

 

[kemppo]

Should i remove bottom branches with leaf's and bud? Looks like they are not getting enough light. Lower leaf's are very small and they are slowly drying and dying. Leaf's are getting some color spots, drying spots, getting yellow and falling off. Also bud down there is very very small. Like 1/10 size compared to ones on the top/middle of the plant. Should i just cut them off and let plant use most of its energy on top buds or will this just harm the plant? I tried to use string to make lower branches to stay up, but they are still under bigger leaf's and buds, so they are not getting almost any light.

I'll add few photos after lights turn on.