Dolomite Lime

Joe parker

Joe parker

Active Member
You obviously didn't read all the posts. Many people have proven some ocean forest is low ph out of the bag. 5 weeks in my soil ph was 5.8-6.0 no matter how much I flushed it with 6.8 water. So I added dolomite lime because I read that will buffer ph of soil. 2 weeks after adding it my soil ph was 8.0-8.3 and I couldn't lower it because of the dolomite lime. Now it's back down between 6-7. Obviously there's signs of difiencies because ph was 8+ for a week or two.....
 
chuck estevez

chuck estevez

Well-Known Member
Joe parker said:
You obviously didn't read all the posts. Many people have proven some ocean forest is low ph out of the bag. 5 weeks in my soil ph was 5.8-6.0 no matter how much I flushed it with 6.8 water. So I added dolomite lime because I read that will buffer ph of soil. 2 weeks after adding it my soil ph was 8.0-8.3 and I couldn't lower it because of the dolomite lime. Now it's back down between 6-7. Obviously there's signs of difiencies because ph was 8+ for a week or two.....
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ok, keep chasing your tale, Let me ask you , what nutrients have you used? where do you get your water from? You can chase your ph all day and listen to forum BS, or we can find the real problem here, your choice.
 
A

az2000

Well-Known Member
Joe parker said:
So I added dolomite lime because I read that will buffer ph of soil. 2 weeks after adding it my soil ph was 8.0-8.3 and I couldn't lower it because of the dolomite lime.
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It sounds like you used hydrated lime instead of dolomitic. Dlime won't raise the ph that high. I have added an insane 8tbsp/gal dlime just to see where it maxes out. It did virtually nothing to the soil ph past 2tbsp/gal. Between 2 and 8tbsp the soil ph rose perhaps ph 0.2. (The first 2 tbsp changed it about 0.4). I'm talking about 6.0 to 6.3 with the first 2 tbsp. 6.3 to 6.4 with the next 6 tbsp. Nowhere near ph 8.

However, when you say it took 2 weeks doesn't sound like hydrated lime. If that were used it would raise it to 8 almost instantly.

Which product did you use? If it's not something I can find with google, can you reproduce the details from the label?
 
Joe parker

Joe parker

Active Member
chuck estevez said:
ok, keep chasing your tale, Let me ask you , what nutrients have you used? where do you get your water from? You can chase your ph all day and listen to forum BS, or we can find the real problem here, your choice.
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Fox farms at 1/4 strength, tap water left out for 48 hours
 
Joe parker

Joe parker

Active Member
az2000 said:
It sounds like you used hydrated lime instead of dolomitic. Dlime won't raise the ph that high. I have added an insane 8tbsp/gal dlime just to see where it maxes out. It did virtually nothing to the soil ph past 2tbsp/gal. Between 2 and 8tbsp the soil ph rose perhaps ph 0.2. (The first 2 tbsp changed it about 0.4). I'm talking about 6.0 to 6.3 with the first 2 tbsp. 6.3 to 6.4 with the next 6 tbsp. Nowhere near ph 8.

However, when you say it took 2 weeks doesn't sound like hydrated lime. If that were used it would raise it to 8 almost instantly.

Which product did you use? If it's not something I can find with google, can you reproduce the details from the label?
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http://www.amazon.com/gp/product/B00OEEGCHS/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1
 
A

az2000

Well-Known Member
Joe parker said:
http://www.amazon.com/gp/product/B00OEEGCHS/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1
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The Mg and Ca percentages sound like dolomite. It looks more white in the picture than any dolomite I've seen. The few I've seen are almond color, off-white. Pure white makes me think hydrated. It doesn't seem to be a name brand I could find through google.

If that was really dolomite, then there's something else going on. I don't believe it's physically possible for dolomite to raise ph to 8.
 
A

az2000

Well-Known Member
chuck estevez said:
It does look like a cal/mag def. But your problem is NOT p.h
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I'm not trying to argue with your greater experience. But, to me, it looks like generalized lockout more than calmag def. I think the OP is correct that his under/over ph caused lockout and deficiency. I just don't understand what caused the high ph. Something doesn't sound right about that part.
 
chuck estevez

chuck estevez

Well-Known Member
az2000 said:
I'm not trying to argue with your greater experience. But, to me, it looks like generalized lockout more than calmag def. I think the OP is correct that his under/over ph caused lockout and deficiency. I just don't understand what caused the high ph. Something doesn't sound right about that part.
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possibly To much cal.mag in that lime
 
A

az2000

Well-Known Member
chuck estevez said:
possibly To much cal.mag in that lime
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Maybe. As I understand it, Dlime's ca and mg are carbonates and not available unless the soil's acidic enough to break down the carbonate. When he added dlime at 5.0 that would have broken down a lot, making a lot of ca/mg available.

But, people do this all the time and they don't get excess ca/mg. The soil doesn't rebound past 7 (definitely not all the way to 8 ). I think it was hydrated lime. At least not dlime as it's commonly sold.

He only added 1tbsp/gal topdressed. That's not a crazy high amount. If he did 3 tbsp/gal I could agree that it could be unhealthy in some way. (I still don't think it would be available to the plant, and wouldn't take the soil higher like that.).

I could be wrong. But, something sounds weird about this. (It's some kind of no-name, re-packaged stuff sold on ebay from someone's garage.). So, I just wanted to chime in that I didn't see calmag def as much as the result of nutrient lockout. I can't add much more to this.
 
Joe parker

Joe parker

Active Member
These are the dark devil autos, this is my first grow ever and all my plants look so sick but I learned a lot this first time around and there still producing some buds even though it probably won't be nearly as much but you live you learn. They seemed much more sensitive to everything compared to the Berry bomb auto I'm also growing(3rd picture)image.jpgimage.jpg
image.jpg
 
rob333

rob333

Well-Known Member
Joe parker said:
I'm growing 8 autoflowers in 2 gallon smart pots with FFOF soil. About 4 weeks in I noticed yellowing of the leaves so I tested the soil ph and it was ~5.8 in all the plants. I always ph my water to 6.5 before adding it to the soil. I flushed and flushed the plants with 6.5-6.8 water and could only get them to a ph of 5.9-6. I looked for ways to raise ph safety and people suggested top dressing powdered dolomite lime into the soil to buffer ph. They all said 1-2 tablespoons per gallon of soil. I only added 2 tablespoons per pot of soil, scratched it into the top of the soil, and did regular waterings. The plants seemed to do better for 2 weeks but now they're all yellowing and all the soil ph is around 8. My question is why do people recommend that much lime per gallon of soil when it's clearly to much?
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wanna no what happenes if u dont ph your soil and let it buffer ;)
 
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