Calcium Magnesium Biobizz Calmag 500ml Biobizz Calmag has been designed for the professional grower and the hobbyist that needs an extra of Calcium and Magnesium in their grow. Either if you need to stick with soft tap water or go down the RO path, Biobizz Calmag brings you a 100% organic and certified solution fo Ca/Mg deficiencies.
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