What is nutrient lockout?

Nutrient lockout is when nutrients are not available to your plants. When using Masterblend, nutrient lockout can occur if calcium nitrate is added to your solution before the magnesium sulfate has completely dissolved. This will cause the calcium nitrate to solidify and no longer be available to your plants (AKA nutrient fallout). When mixed properly, Masterblend formulas are 100% water-soluble with no fallout.

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