The 50/50 is a base mix to which many soil amendments can be added or used straight as a hydroponic medium. It consists of 50% flushed, sieved and charged (Calcium-Magnesium-Nitrate) coco coir and 50% medium perlite.
A perfect base for a hydroponic grow and seedlings will have a great start to life in this mix.
Using this mix alone without the addition of compost (worm casting LIQUID or SOIL) or liquid fertilizers is not recommended. Consider using a liquid nutrient like the GHE range, Biobizz range or Umya range.