Looks like a deficiency - Help!

D

Drumin

Active Member
Hi, I'm growing in an Aeroponics setup and I just put my clones (from the cloner using nothing but Clonex) in the main system on wednesday. On friday I started to notice, what appears to me to be a Phos deficiency.

I'm under 2 600watt HPS.
My PH is 5.6
My water temp has been 75 or below - Currently 70
My PPM is 1120
I'm using Dutchmaster Gold Veg nutes
1/2 strength dose of Dutch Master "Zone"
and 3/4 strength DM "Silica"

Is this a Phos deficiency? If so, how can I correct it since I'm using a "program" type nutes which is supposed to cover all the plants needs?
 

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Drumin said:
I have a fan blowing across the plants and the AC keeps the room around 70-75 depending on how hot it gets outside.
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I'm not super familiar with those nutrients, but that plant doesn't look anywhere near big enough to be @ 1120ppm?

I would flush it all out, cut the nutes back to 1/2 that and let the plant sort itself out. Then start bringing it back up on the nutes.
 
that kinda looks like light burn..? thats what mine did when they got too close to the lights.. but your temps and things all check out... hm.....
 
whatapothead said:
that kinda looks like light burn..? thats what mine did when they got too close to the lights.. but your temps and things all check out... hm.....
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Nah, it's nutrient burn. I'm very familiar with is as I have done it too many times to count. Annoys me too, those leaves forever stay ugly. Plant may be just fine, but I hate having to stare back at a mistake I made early on.
 
Drumin said:
Is this a Phos deficiency? If so, how can I correct it since I'm using a "program" type nutes which is supposed to cover all the plants needs?
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You basically said it all here...you're giving it all (and then some) of the nutes it needs. The only way you can have a phos deficiency is if you have lockout, which is usually caused by high ph (above 6.5 in a hydro system).

Naaah, them leaves look fried, that's nute burn in my opinion. Think about it...how can that little plant and root system possibly absorb or use or even need all of the nutes you're giving it? I know it came from a plant that was used to that ppm level, but that plant had a bigger root system and more foliage to support. Give them young roots a chance to acclimate :mrgreen:
 
whatapothead said:
let me state that some plants can handle that high of ppms at that young of age. but you're right, some can't.
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Agreed; but I would argue that even if the plant could withstand that high a ppm it would not come close to requiring that high a level when it was that small. At best, he's just wasting nutrients (and possibly allowing salts to build up); I don't believe it would hurt the plant one bit if he lowered the ppm level by half - indeed, there's a good chance it will help...
 
whatapothead said:
let me state that some plants can handle that high of ppms at that young of age. but you're right, some can't.
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This one clearly can't. It's suffering from nutrient burn. I would cut that down more than half. I would feed with fresh water for at least a day or two, then get the nutrients at about 1/3 of that and work them up slower.
 
iho, doesn't look like nut burn, looks more like a potassium deficency. Nut burn starts with the new growth first, then spreads to old growth. If you have to much sodium present, it can and WILL lock up roots, also will cause a potassium deficency. Flush, then 1/2 nuts
 
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