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What is the buildup on my grow medium?Updated a year ago

Growing plants hydroponically or in soilless grow medium requires water soluble nutrients in order to be grown successfully. Water soluble nutrients are taken into the plant through their root systems. Over time, these nutrients can accumulate in the grow medium and form white specs, or appear like calcium deposits. You can get rid of this buildup by scraping it off and changing the water.

Keywords and phrases: fungus, mold, white, crusty, hard, color change, whitened.

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