Please help I’m at a loss as to what is wrong with plants.

Ok so I am growing white widow and blue dream in coco/perlite in 5gal fabric pots. They are under a 450w LED set to about 50% currently. They are a few weeks into veg and none of them (except maybe a couple) are completely healthy. I water them twice a day till I get 20% runoff. The temp and humid is 70-80 and 60-70 respectively. They are fed with R/O water that has the full humboldts secrete line in it. Cal mag at 5ml/g A+B 45ml/g Golden Tree 2ml/g Plant enzymes 1ml/g. PH to around 5.8 and EC between 1.6 and 1.9. This is my second grow, my first grow was in soil and I had newbie issues at first but I fixed them and grew some top notch flower. This time in coco these plants are not responding to anything I try. They seem pale and wispy and some have spots and it seemed like they had nute lockout but I flushed and and tested runoff EC and they were al over the place and there seems to be no consistency. Any help will be greatly appreciated.

Also, the clones I have in the clone king have all started growing roots and seemed perfect but now the lower leaves are starting to yellow and die even tho roots are white and look healthy in the aeroponics cloner. The water in there is R/O with a lil clonex and is like 75•F.

I finally decided to become a member and this is my first post and any help will be much appreciated.

"LED's emit no IR, so to achieve similar metabolic rates found in HID or greenhouse conditions at 78F air temp,LED growers need to run the room air temp at 83F-85F. Air temp can also be lowered by 3F-5F in the last 2 weeks of flower to enhance ripening, but remember as relative humidity goes up the air temps go down"

Remove all the additives and just use the A B,RO water so add some epsom to get extra Mg.. Start there and see.. 1.6 EC of A B and your 5ml/g calmag.

myke said:

Remove all the additives and just use the A B,RO water so add some epsom to get extra Mg.. Start there and see.. 1.6 EC of A B and your 5ml/g calmag.

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What he said.... cut the crap.

I would use tap water with a and b and a tiny bit of calmag.

One issue I think you may have is white widow is a light feeder and blue dream is heavy.

I agree with hotrod and Myke both. First thing to do is get the air temps up to at least 80, then your plants will start to metabolize the nutrients properly. Also, they need more magnesium with those HS A & B nutrients than extra calcium. The extra calcium in the calmag could be making the problem worse. Try mixing in .5 g per gallon epsom salts. And, if that doesn't work, buy a bag of Maxibloom and run it at 1.2 EC. Everyone I know who used to use liquid nutes, now is much happier with Maxibloom or Jack's A/B. Good luck bud, you can turn it around!!

hotrodharley said:

"LED's emit no IR, so to achieve similar metabolic rates found in HID or greenhouse conditions at 78F air temp,LED growers need to run the room air temp at 83F-85F. Air temp can also be lowered by 3F-5F in the last 2 weeks of flower to enhance ripening, but remember as relative humidity goes up the air temps go down"

Growing With LED Lights - Best Practices | CA Lightworks

From positioning of the lights to temperature and humidity, California Lightworks has your go-to guide for growing with LED lights. Read more.

californialightworks.com

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I read that article and it was super Informative thank you.

Rurumo said:

I agree with hotrod and Myke both. First thing to do is get the air temps up to at least 80, then your plants will start to metabolize the nutrients properly. Also, they need more magnesium with those HS A & B nutrients than extra calcium. The extra calcium in the calmag could be making the problem worse. Try mixing in .5 g per gallon epsom salts. And, if that doesn't work, buy a bag of Maxibloom and run it at 1.2 EC. Everyone I know who used to use liquid nutes, now is much happier with Maxibloom or Jack's A/B. Good luck bud, you can turn it around!!

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Yeah I used floraflex on my first grow and those nutes aren’t liquid and it turned out great. I will def try what you’ve suggested

Yukimi Fakumata said:

I read that article and it was super Informative thank you.

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It helped me when I got my first LED. Also go to YouTube and check out Bruce Bugbee. His information on the light spectrum is really informative. Truly educational.

Thanks for the help and information everyone! Does anyone have any insight to the clones situation. Fan leaves yellowing dying on some but roots white and growing.

Yukimi Fakumata said:

Thanks for the help and information everyone! Does anyone have any insight to the clones situation. Fan leaves yellowing dying on some but roots white and growing.

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Time to feed
And light them up

Clones are just ready for some food.


And my 2 cents on watering twice a day to 20% run off in 5 gl containers is not needed with the size of your plants

vertnugs said:

Clones are just ready for some food.


And my 2 cents on watering twice a day to 20% run off in 5 gl containers is not needed with the size of your plants

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That’s what I thought too but after reading for hours everyone seems to think that the more feedings the better for coco regardless of pot size. Ty for the info tho I guess I’ll start feeding the clones. TY

Yukimi Fakumata said:

Thanks for the help and information everyone! Does anyone have any insight to the clones situation. Fan leaves yellowing dying on some but roots white and growing.

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Transplant into medium now. Feed 1/4 strength.

hotrodharley said:

Transplant into medium now. Feed 1/4 strength.

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Thank you

Yukimi Fakumata said:

That’s what I thought too but after reading for hours everyone seems to think that the more feedings the better for coco regardless of pot size. Ty for the info tho I guess I’ll start feeding the clones. TY

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In coco, you can feed as much as you want, once the roots have filled out a container. So, until then, I usually feed once per day. The way I transplant, I start multifeeding around start of 12/12, but it can be done a lot of different ways.

With Coco, it's all about aeration.. even saturated Coco contains over 20% even when fully saturated, so there's no reason to go light on watering from day one.

It's almost impossible to drown your plants in this medium, and keeping a steady state of moisture helps with pH swings.

Do a soil slurry test and report back. in my opinion its vital to monitor ec/ph in/out. the plant will tell you alot.

VincenzioVonHook said:

With Coco, it's all about aeration.. even saturated Coco contains over 20% even when fully saturated, so there's no reason to go light on watering from day one.

It's almost impossible to drown your plants in this medium, and keeping a steady state of moisture helps with pH swings.

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I see what you’re saying, others were saying to only water once a day as the plants aren’t fully grown yet but you’re stating more frequent irrigation doesn’t hurt. I swear conflicting information is what makes this so difficult starting out lol

Yukimi Fakumata said:

I see what you’re saying, others were saying to only water once a day as the plants aren’t fully grown yet but you’re stating more frequent irrigation doesn’t hurt. I swear conflicting information is what makes this so difficult starting out lol

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You've come to the hardest place to learn.....the internet.


Just because some thing can be done.......doesn't mean it should be.

Yukimi Fakumata said:

I see what you’re saying, others were saying to only water once a day as the plants aren’t fully grown yet but you’re stating more frequent irrigation doesn’t hurt. I swear conflicting information is what makes this so difficult starting out lol

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Welcome to RIU
Not all are right stick to recent info and do a journal where the truth will be revealed