Plant Moisture Stress - Symptoms and Solutions

robbie4door said:
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ben i need your wisdom
what do i need/ dont /do help befor the fall
i use botanicare pure blend pro its a 1-4-5 . started that at start of budding
i add 6 tsp per 5 gall bucket every third watering ( is that enough)
before that i used botonicare pur pro 3-2-4 for veg, on both i added botanicare liquid karma
.3-.3-.5 for my mac nutriants. the problem started before i changed nutrians and has bothered me for well over a month now
please help 3rd grow i guess still a lot to learn but love the lessons ( all help welcome)
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Flush it and feed it some real nutes, good dose of something with N in it
 
Ohh really every watering huh
I'll try that on my next closet grow
ot help with being new sounds like it would help with any over nutrient problems
wicked pissa thanks
 
Here are some pics of severe leaf curling.....don't think it's a watering issue....any way to tell what the issue is? Over fert?p1010119.jpgP1010118.JPG
 
Questions for Uncle Ben, or other "adult" growers:

I have a new grow space that is on well water. There is a thriving vegetable garden running off this water, but I decided to test it anyways.

Straight out of the tap the pH is around 8 and PPM are between 600 and 700.
Total alkalinity, using a high quality pool test kit, is around 600!

I am worried, using water this alkaline, that I will see too much rise in medium pH over time. I am growing in organic soil that has lots of peat, poops and minerals....and it has been limed to stabilize it.

I'm not trying to pH the water...I'm worried about bicarbonates building up over time and raising the medium pH. This water is very alkaline.

Are my worries unfounded?
 
DocBud said:
Questions for Uncle Ben, or other "adult" growers:

I have a new grow space that is on well water. There is a thriving vegetable garden running off this water, but I decided to test it anyways.

Straight out of the tap the pH is around 8 and PPM are between 600 and 700.
Total alkalinity, using a high quality pool test kit, is around 600!

I am worried, using water this alkaline, that I will see too much rise in medium pH over time. I am growing in organic soil that has lots of peat, poops and minerals....and it has been limed to stabilize it.

I'm not trying to pH the water...I'm worried about bicarbonates building up over time and raising the medium pH. This water is very alkaline.

Are my worries unfounded?
Click to expand...

Adding lime to your soil when you have alkaline water isn't the best idea. I found this website for you. It should help you out.

http://www.extension.purdue.edu/extmedia/HO/HO-242-W.pdf
 
DaveCoulier said:
Adding lime to your soil when you have alkaline water isn't the best idea. I found this website for you. It should help you out.

http://www.extension.purdue.edu/extmedia/HO/HO-242-W.pdf
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I didn't add the lime, it comes that way.
GREAT LINK!

Now, considering my situation, how do you recommend I deal with it?
I can do the following:

Use RO water or a mix of RO and well
Use pH down
treat the soil with suplfur.

I what do you recommend?
 
DocBud said:
I didn't add the lime, it comes that way.
GREAT LINK!

Now, considering my situation, how do you recommend I deal with it?
I can do the following:

Use RO water or a mix of RO and well
Use pH down
treat the soil with suplfur.

I what do you recommend?
Click to expand...

I would run the well water thru a charcol filter (I use Brita) and adjust the PH down (I use Apple Cider Vinegar) I have found that using the brita filter knocks a point off the ph. If you go RO you will need to suppliment Cal/Mag in most cases
 
Vinegar will lower the alkalinity of your well water. Id give that a try to see how much of an effect it has. If its not enough, then try a mix of ro and well water w/ the vinegar and see how well it works out.
 
DaveCoulier said:
Vinegar will lower the alkalinity of your well water. Id give that a try to see how much of an effect it has. If its not enough, then try a mix of ro and well water w/ the vinegar and see how well it works out.
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Pretty much what I figured. I was going to mix RO and the well water, and add a bit of phosphoric acid.
I'll find a mix so I get the minerals at an acceptable level of alkalinity.

I was hoping you guys would say, "Pshaaaw!! Full steam ahead!"
 
DocBud said:
Pretty much what I figured. I was going to mix RO and the well water, and add a bit of phosphoric acid.
I'll find a mix so I get the minerals at an acceptable level of alkalinity.

I was hoping you guys would say, "Pshaaaw!! Full steam ahead!"
Click to expand...

Not sure why I didn't think of this earlier, but another way to combat the alkalinity of your water is to use an acidic fertilizer. Ammonical Nitrogen will lower the ph of your soil over time, while Nitrate Nitrogen raises the ph.
 
DaveCoulier said:
Not sure why I didn't think of this earlier, but another way to combat the alkalinity of your water is to use an acidic fertilizer. Ammonical Nitrogen will lower the ph of your soil over time, while Nitrate Nitrogen raises the ph.
Click to expand...

Yup. I knew that.....but I grow with Osmocote Plus with good soil in some pots, and custom organic soil in others. I don't use WSF's.

I've dealt with the problem by mixing with RO and Ph'ing down to 5.8....that lowers the TA to about 60, which is acceptable.

I would use some sulfur, but I'm not experienced with it, and I really don't want to damage my crop.
 
Dave, just posted the same thing about Brita in CountryFarmer's thread. A point reduction is about right especially if high in bi-carbs. Brita filtered water would be perfect regarding his well water.

What I do before planting to drop the soil's pH:

1. Add quite a bit of peat moss,

2. Add granulated sulfur (pastules).

After planting:

1. Add/scratch in peat moss,

2. Add/scratch in about a Tblsp. of powdered sulfur to a 3-5 gallon pot,

3. Use acid foods like azalea, 21-7-7,

4. Use sulfate type salts - ammonium sulfate, iron sulfate, and finally,

5. Don't worry about it unless you can directly attribute some deficiency or imbalance to pH. Cannabis is very pH tolerant contrary to forum "popular' thought.

Run the tests - pH adjusted water does little to adjust the soil's pH on a long term basis. Soil is a powerful buffer.

If you must - an inorganic acid like sulfuric, phosphoric, or nitric is much more stable (effective) than an organic acid like citric. Adding it may (temporarily) change the top 1" or so but what have you got at the bottom of the pot where the majority of your feeder roots are located? A cheap source of sulfuric is battery acid from an auto parts store.

UB
 
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