Checked my water again today. Plain water 6.5. with EM1 after 2 hours 4.6. Runoff water 4.4
After reading those articles I'm going to switch to dolomite.
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How to apply dolomite lime to plant soil?
The key concern when it comes to applying dolomite lime to your cannabis plant soil is how much dolomite lime to use in soil.
Ideally, you will want to add 6 to 7 teaspoons of fine dolomite lime for each gallon unit of water.
Using fine dolomite lime is crucial because coarse dolomite takes a year before your plant’s roots can absorb it. So, for example, if you choose to mix enough soil with 5 gallons of water, then you will need to add around 30 to 35 teaspoons. That is how you can calculate how much dolomite lime per gallon of water you need to add for immediate results.
However, if your soil pH is not too acidic, you can begin by adding 2 to 3 tablespoons of dolomite lime to 5 gallons of water and see how your cannabis plants respond before you add more.
Pro-Tip: Dolomite lime that has not been appropriately mixed will stratify and form a cake-like layer in your cannabis garden, which can burn your autoflowering cannabis plant’s roots.