Indoor Help before they die ? COB/auto

[hugrem]

Hello guys in the last few days my girl have started to get yellow spot on top growth and black/brown spotting ... Could somebody please help me , I feel like im im doing everything correctly ... This plant is under a roleadro 400w cob and a 130w blurple led at 15-16inch could it b
be light burn ?
PH solution : 6-6.2 (650-700ppm)

PH run off : 5.8-5.9 650-700 ppm

Soil: coco coir

Strains : afghani kush auto

How old : 40 days ffrom seed

Nutrient: last fed was 2ml flora micro , 2,5 ml flora gro ,3ml flora bloom and 3-4ml calmag ( all this is for a gallon)

Lights : 400w actual watt cob in a 2x4 tent

Temperature : 75-80f and 45-55 rh

Thanks to anybody that can help me.

 

[Garage_Grower]

I would raise the light up, and bring your feed ph down. Feed at 5.7-6 range with gh flora in coco


Easy smoking! [emoji869]

 

[Mañ'O'Green]

I just took a quick look at my chart from when I ran GH and it looks like you are low on nutes and yes the PH has been too high. The other thing is you are missing some of the basic nutrients from that line in the "simple program"

 

[hugrem]

Thanks for the tips just fed at 5,7 ph , and raised the lights 3-4 inch , hoping for some result asap.

 

[rick-j]

Wow, finally found someone using Roleadro COB'S, Your distance for sure, I had my COB'S at about 30". I was not feeding enough nute's, they got way to much cal-mag. I did a lot of stuff Wrong, I had 3 girl's in a 4x4 tent, I also had a 300w led. Wish I could help more, but i'm a rookie learning myself. I'm very interested in how that COB work's out for you. Most of those burnt leaves are from the overlapping light from the P300. Good luck, you will get some answer's on this site.

 

[hugrem]

Still a nice lady you got there what type of medium are you growing in and what nutes line are you using ? I raised the lights , the leaf are now perking up but the damage is there... Hope I can save it aand still have a decent harvest

 

[rick-j]

I grew in OF soil, 5 gal. smart pot's, advanced nutrient's, had liter's and gallon's mixed up, I was using way to lttlle of that, way to much cal-mag into my 5 week of flower. I asked for help in the sick plant's thread, one of the staff, Waira, helped me a lot, got a lot of other help from people on the site, I even got help very quickly when I was freekin out a little, Thank's Archie---- Someone will make it better for you. I'll be keepin an eye on you, good luck, I bet you will have a good harvest.

 

[Beerhunter CDN]

Some good advice here, ManOGreen certainly knows his stuff. I don’t think your plant is too far gone to get a decent harvest from her. I try to keep nutes between pH 5.8-6.2 for my coco grow and be sure to water for runoff every time.

 

[Rev. Green Genes]

If you have a micro nute spray available. I would hit it with some foliar spray. Most of the yellowing is on new leaves, so the (lockout) deficiency is immobile minerals. Most of which are micro nutes. I have saved a few plants doing this.

edit: watch for hermies, I've seen plants do that after bad pH spikes.

 

[hugrem]

Thanks for all the tips guys , What kind of foliar spray I should look into that is available on amazon ?

If you have a micro nute spray available. I would hit it with some foliar spray. Most of the yellowing is on new leaves, so the (lockout) deficiency is immobile minerals. Most of which are micro nutes. I have saved a few plants doing this.

edit: watch for hermies, I've seen plants do that after bad pH spikes.