add some lime to the soil. dig up an inch of soil and spring some lime and water.
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I wouldn't be too concerned about it, Lime would help but I grew two harvests with soil and never tested the ph. the ppm is probably from the soil bits in the water so I wouldn't worry about that either.
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yes dolomite lime is called a 'buffer' in the soil. add 1-2 TBSP of it per gallon of soil. the reason your pH is so low coming out is because the nutrients in the soil are making the pH very low. To lower from 7 to 5, you pH could be around 4.....which is BAD. first of all....are you testing pH/ppm of nutrients first? you want to aim for 6.3-6.5 pH for soil. whats the ppm before going through? 2000 is high for 2nd week of flower. The plants will look ok for now, but with the pH off deficiencies can develop
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yes dolomite lime is called a 'buffer' in the soil. add 1-2 TBSP of it per gallon of soil. the reason your pH is so low coming out is because the nutrients in the soil are making the pH very low. To lower from 7 to 5, you pH could be around 4.....which is BAD. first of all....are you testing pH/ppm of nutrients first? you want to aim for 6.3-6.5 pH for soil. whats the ppm before going through? 2000 is high for 2nd week of flower. The plants will look ok for now, but with the pH off deficiencies can develop