Additives are specialty fertilizers Zen Products Grow Additivesthat known by their ingredients. Pick a fertilizer additive for it’s ingredient and/or your plants growth stage. Nutrient additives can boost Potassium, Phosphorus, Calcium, or Magnesium depending on your plants age and it’s mix. You can brew Actively Aerated Compost Tea (AACT) quickly and easily as an additive. AACT multiplies the bacteria and fungi of the ingredients when you bubble it over night. Make your plants taste and smell their best with plant fertilizer additives. Use plant fertilizer additives to correct plant nutrients deficiencies and boost growth.

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