NTS Soft Rock. SRP | 25kg phosphate.

$39.70 AUD excl gst

NTS Soft Rock™ is a soluble, bio-friendly, colloidal clay-based calcium phosphate which has been produced to not “lock up”



NTS Soft Rock Phosphate is a colloidal form phosphate providing full season availability to your plants and soil.

The Soft Rock Phosphate is unprocessed with exceptional trace element levels and high in silicon. It includes 8-9% phosphorus, 19.3% calcium and a rich lode of trace elements. Known for not having problems with heavy metal cadmium the NTS Soft Rock Phosphate is a great option to re-mineralise your soil.

ACO certified version of product available when purchasing a minimum of one tonne.


  • ACO certified version available (one tonne minimum buy).
  • All elements are in colloidal form. This provides ongoing plant-availability and ensures that none of the component elements can ever become locked up.
  • Processed phosphate fertilisers can contain high levels of the heavy metal, cadmium. NTS Soft Rock™ is an unprocessed phosphate – an ideal alternative for minimising this environmental and health problem.
  • Exceptional trace element levels.
  • Helps re-mineralise soils.
  • Colloidal minerals provide health benefits to soil microbes.
  • Colloidal calcium component (approx. 20%) is much more plant available than limestone.
  • High in silicon. Research suggests increased brix levels in plants are related to the presence of silica.

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