GHF Calcium 500g
GHF Calcium 500g
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GHF Calcium 500g

Green House Feeding
Regular price
R 425.00
Sale price
R 425.00
Regular price
R 425.00
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Unit price
Tax included.




This additive should be used in situations in which the amount of calcium present in the water is below the recommended values.

Our Calcium is chelated by EDTA - This product is very stable and does not interact with other elements..

Our chelated Calcium prevents and corrects deficiencies which are caused due to a lack of/or imbalance in the assimilation of Calcium.

Maximum Solubility: 2.5lb/gal or 300g/L water
Recommended amount for stock solution: 12oz/gal or 90g/L water

R/O System

if you use R/O water, it is necessary to supplement with calcium.
*Please check your R/O system regularly (maintainance)


R/O and very soft > Recommended Values
Soft > 50-80% of recommended values
Moderately Hard > 10-50% of recommended values
Hard Water > No Calcium required


This product has been sourced by Green Houston:

Their team of “Horticultural Enthusiasts” have gone through tremendous lengths to ensure that every product we stock meets their Green Houston standard. So we don’t sell products that we would not use ourselves.

All their organic, living and fresh amendments and additives are stored correctly and regularly checked to ensure the freshest stock and best possible user experience is delivered.