If a 90/10 quartz sand/spagnum peat moss root mix is 10% peat moss by volume. The CEC of the sand and peat moss is 0.9 meq/100 g and 81meq/100g.

If a 90/10 quartz sand/spagnum peat moss root mix is 10% peat moss by volume. The CEC of the sand and peat moss is 0.9 meq/100 g and 81meq/100g. If the predicted mass ratio of 90/10 ,volume based, root mix is between 97and 98% sand by weight, how would this proportional variability affect the root mix CEC?