What is this?
- Thread starter Rasta Roy
- Start date
caveman117
Well-Known Member
could be calcium, what's going on in the grow, could be a number of other potential things.
Joe Blows Trees
Well-Known Member
I don't see calcium def. It doesn't look specked and rusty enough. The spots look irregular and blotchy purple or dark. I'd say phosphorous def.
I agree with Terry. Need more info about the stage of growth. If you don't feed with a lot of runoff, and if you're into flower, it could be salt buildup. If you don't let the soil dry enough that can prevent the plant from experiencing a full range of ph (holding it low).
I agree with Terry. Need more info about the stage of growth. If you don't feed with a lot of runoff, and if you're into flower, it could be salt buildup. If you don't let the soil dry enough that can prevent the plant from experiencing a full range of ph (holding it low).
Rasta Roy
Well-Known Member
I'm not using traditional bottled nutes, only bottles are Fish hydroslate, liquid Kelp, fulvex, molasses, and humic acid. And I just use those as ingredients for aerated teas.
I am using a soil mix base of compost, perlite, vermiculite, and worm castings. Amended with fish bone meal, lime, kelp, and azomite.
It's about three weeks into flower.
PH runoff is right at 7.0
I am using a soil mix base of compost, perlite, vermiculite, and worm castings. Amended with fish bone meal, lime, kelp, and azomite.
It's about three weeks into flower.
PH runoff is right at 7.0
Are they only the lower leaves? It could be lack of light and the normal shedding unproductive leaves older/lower leaves. That's normal.
At that stage it could also be P def. Considering the nutrients you're using, it might be better to ask in the organic section. But, if it were me I would add 2 grams/gal bone meal. This would increase 1 : 1.3 : 1.6 NPK (ratio) to 1 : 2 : 1.6. (I have never done this. Not sure how available/fast-acting that would be. But, it seems it would be relatively safe.).
HookahsGarden
Well-Known Member
That is a boron deficiency.
It comes from
1. Lack of micro nutrients
2. A high pH in the medium.
Best of luck.
Peace
It comes from
1. Lack of micro nutrients
2. A high pH in the medium.
Best of luck.
Peace
HookahsGarden
Well-Known Member
Best chart ever...
Rasta Roy
Well-Known Member
I should be covered on the micronutrients but I'll work on bringing down the pH
HookahsGarden
Well-Known Member
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I wonder why your runoff is so alkaline. It sounds like you're using organic nutrients. I thought those had a tendency to acidify soil. Too much lime?
I've never had that problem. If you only feed water (relying on the nutrients amended into the soil), it won't pull the PH much because it's low in ppms. If the water contains nutrients, the nutrients should acidify the water and the added ppms will help pull the soil ph. (But, one concern is: if the lime is carbonates, they'll break down with acid and release Ca and Mg. You may need to water/feed with enough runoff to flush what may be excessive ca/mg).
Aluminum sulfate will lower ph. I've amended it into soil. About 6g (per gal of soil) of Fertilome's Hy-Yield product lowered my ph 1 point. I don't know how that would work if you topdressed it and watered it in. (Some people have a problem with aluminum being toxic. If you're doing organic for a reason, that may be a concern.).
If you use ph-down to lower the ph of your water, that's going to add potassium. If it's pure water it won't take much ph-down (which is an example of how the water won't have much "gravity" to affect the soil).