High PH signs, symptoms and correcting...Pictorial!! A must read for newb'z

sativa indica pits

Active Member
In the month I have been on roll it up, I have read countless threads of plant problems, dark green leaves drooping, claw like looking, slower growth and purple stems to name a few. High ph is a problem for many growers including my self.

Here are a few plants that are healthy, growing fast hell, and the ph is right around 6.5-6.8 range.
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I selected a few plants that I dont really like to do this experiment on. Here are the pics of the root systems before the experiment.
DSC00784.jpgDSC00804.jpgDSC00801.jpg They are healthy, white and very fast growing, this is after 4-5 days after my second round of transplanting.

This is the water I flushed through the plants. It was the highest possible ph I could get. Above 8.5 would be my guess.
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With-in 12 hrs of flushing with 8.5 water the plants started showing symptoms, drooping, claw looking leaves, dark green and almost a 3d look to the leaf surface. There are some leaves that curl and twist as the soil is now toxic to them.
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Ph problems are best diagnosed with-in 24 hrs of the first symptoms. After 48 hrs the ph continues to lock out nutes and makes it almost impossible to tell what the hell is wrong with your plants.

If the ph remains high for more than 48 hrs it will start yellowing the plants and make them look like death( note if the ph is around 7.5 the yellowing will take much longer and the dark green leaves and drooping will be the main symptoms) When the ph is above 8 it locks out many macro and micro nutes at the same time which causes the yellowing, brown dead spots, rust color spots, purple leaves and stems and many more symptoms. It becomes very hard to tell what is wrong because your plant will show 3 maybe even 4 deficiencies at the same time. It can be confused with cold temps, and over fertilizing when the real problem is ph.
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To correct a high ph, I will be flushing with 4.0 water. Lemon juice is also very acidic which will lower the ph.
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After about 1 gallon of 4.0 water the ph starts to drop (note, these are large dunkin donut cups that hold about 4 cups of soil) If you have a large pot, It will take a lot of water to drop the ph to a 6.5-6.8 range.
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After about 2 gallons of flushing with 4.0 water the ph is down to an acceptable range.
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I hope a lot of people who have plant troubles read this, and put it to good use. Feel free to ask questions or mention anything I missed. Merry growing!!
 

sativa indica pits

Active Member
would you agree the reason the plants I took pics of look like that is because the ph was 8.5 or higher?

If that was true and ph isnt much of a big deal, those plants must look like that cause..... well the ph was too high.

I have to get some pics of the exact plants I ran this experiment on, they are recovering, perked up and getting back to normal after going thru complete hell for a few days. I will post them shortly.
 

ProdigalSun

Well-Known Member
Yes I would certainly agree.

Ph stands for Pain in the Heinie. I had nothing but trouble with it all last summer.
 
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