Oh great, Problem!...

Well I'm not sure what the problem is with my girls, this started just a couple of days ago and they're getting worse fast, other wise, doing very well.

My girlies are 3 - Pure Power Plant from seed.
600W. in a 4'X4'X6' tent
50% humidity, (via an, in tent, cool humidifier.) 75 deg. F. (via piped in air conditioning from separate source.)
FFOF soil in 3 separate 5 gallon buckets
GH Flora Trio nutes at 3 week strength - 1/2 strength mix. Cal/Mag, Hydroguard, 2-3 drops per gal. Superthrive. Alternate between nutes then water about 4 days apart (using R.O water.)
PH: 6.5 feeding, (uncertain of feeding drainage PH.) Watering 6.5, drainage PH is 5.
Girls are 6 weeks old. Under the 600W. light, 17" above tops of girls.
It is possible that it might be:
*PH fluxuations

* View attachment .
*Yellow Leaf Spots/Leaf Septoria
*Boron def.
(?)

If I'm missing any pertinent info please let me know!

?

It has been 3 weeks since the pics how are they developing?
Just a note. GH Trio are not meant for ffof. It can be grown that way but you are using hydroponic nutes for soil when they were meant for other mediums like coco and rockwool.

Buba Blend said:

It has been 3 weeks since the pics how are they developing?
Just a note. GH Trio are not meant for ffof. It can be grown that way but you are using hydroponic nutes for soil when they were meant for other mediums like coco and rockwool.

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GH can certainly be used in Soil! Just not hot soil. Once the nutes from the soil are depleted, the GH nutes can be used

GrowGorilla said:

GH can certainly be used in Soil! Just not hot soil. Once the nutes from the soil are depleted, the GH nutes can be used

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I think your right about using GH Trio nutes. GH states on their website that it CAN be used in soil as well. Maybe not the best nutes but I'm not willing to spend all that $ on nutes and then start over with something new.
Thanks Buba

Buba Blend said:

It has been 3 weeks since the pics how are they developing?
Just a note. GH Trio are not meant for ffof. It can be grown that way but you are using hydroponic nutes for soil when they were meant for other mediums like coco and rockwool.

Click to expand...

They're developing quite well now, with the exception of a problem of not getting enough Cal/Mag. Let's hope I've turned that around.

Creature! said:

I think your right about using GH Trio nutes. GH states on their website that it CAN be used in soil as well. Maybe not the best nutes but I'm not willing to spend all that $ on nutes and then start over with something new.
Thanks Buba

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I agree they can be used. I didn't word my 1st post well and liked GrowGorilla's post because he said it better.
What I could have said was in ffof you could have likely grown a healthier happier plant without even using them, using just water. Especially for the 1st 30 days in ffof when no fertilizers at all is a common method of people growing dank crystal in it.
Now that you have been feeding the trio you need to likely finish the plant with the trio as you probably damaged the soil colonies. Instead of feeding the colonies that feed the roots, you now need to continue feeding the roots with the trio.
Yes it can be done. Find a bunch of successful growers doing it, that may be hard.
Happy Growing!