How To Fix Alkaline Soil and Raise PH Levels In Soil

PH Soil Levels

How To Change PH Levels In Cannabis

You’ve tested your soil and found that your PH levels are either too acidic or alkaline. Now, what are you going to do? Well, don’t worry, in most cases, it is not that hard to change your PH levels to an acceptable level. However, if not done right, you can ruin your cannabis yield or severely limit the yield. I will now go over the steps that need to be taken to either raise or lower the soil PH levels.

How To Raise PH In Soil

You will need to raise the acidic level of your soil if the PH level is less than 5.5. The most common way to lower the PH levels is through adding limestone to your soil. The two types of limestone that are most commonly used are calcitic limestone, which is primarily composed of calcium carbonate, and dolomitic limestone.
Both types of limestone work equally well. However, dolomitic limestone also adds nutrient magnesium to the soil. Also, limestone can be bought in the following forms: pellets, hydrated, granular and crushed. Work the limestone into the soil for best results.

  • Crushed Or Pulverized Limestone: For newbie cannabis growers, crushed limestone is the preferred choice as Crushed limestone is fact acting and safer for your plants. The main downside to crushed limestone is that it tends to clog fertilizer spreaders more easily. But, most indoor growers of cannabis will not need to worry about using a fertilizer spreader. For quickest results, look for finest grounded limestone that’s available.
  • Pellets Or Granular Limestone: Pellet limestone can be spread more easily. However, granular limestone also takes a long time to be able to be broken down into the soil. Since spreading your limestone via a fertilizer spreader is not needed for indoor operation, granular limestone should not be your first choice.
  • Hydrated Lime: Hydrated limestone is the fastest acting limestone. However, unless you know what you are doing, it easy to apply too much hydrated lime to your marijuana plants, which could be disastrous. Therefore, beginning cannabis growers should stay away from hydrated lime.

How To Lower Your PH Soil Level

You will need to lower the PH level for your soil if your PH level is more than 6.5.  Like with acidic soil, to lower the PH soil level, you will need to add fertilizer. The nearby chart is a good visual indicator of the various PH levels. The best way to solve the problem of soil being acidic is prevention by using soil that is enriched with mulch and compost. It takes a while for mulch and compost to work. But, regular mulching and composting will eventually lessen the PH, soil, level. You would then transfer your soil, enriched from mulching and composting, from your outside garden to your indoor cannabis growing operation.
However, if you are not able to use soil and compost enriched with mulch, you will need to apply the following nutrients to your soil:

  • Elemental Sulfur: Adding Sulfur to the soil is the most straightforward and typical way to raise PH levels. Sulfur is inexpensive, spreadable, and moderately safe to handle. A major drawback of elemental Sulfur is that it takes a long time for the sulfuric acid to work. How quick it will work depends on the following: a.) How fine are the sulfur grains. How much soil moisture is present. c.) Temperature of the soil, and any bacteria that may be present. With these above factors in mind, the time at which Sulfur will start working depends upon the above can even take up to a month for the Sulfur to be absorbed into the soil. As a result, aluminum sulfate instead of plain elemental sulfate is most often used to reduce the PH soil levels.
  • Aluminum and Iron Sulfate: Both of these nutrients act very fast in reducing the PH level of your soil. However, use these sparingly as they contain elements that, in large doses, can be potentially damaging. Also, try to make sure that any aluminum or iron sulfate does not come into direct contact with the leaves, and if they do come in contact with marijuana leaves you need to be sure to thoroughly wash off the leaves.
  • Fertilizer Containing Acidifying Elements: Add fertilizers that contain elements, such as, ammonium nitrate, amino acids, ammonium sulfate, or sulfur-coated urea. However, this is not a quick fix, and it will take time for the PH levels to be decreased.

Click the following link to find out how to choose the best PH Testers and Meters