Re-circulating systems are a convenience but some growers feel they are restricted to using conventional salt based nutrients. Thus, they miss out on the rewards associated with organics. Here is how to use organics in a re-circulating system.
Reduce your conventional salt based nutrient to a 70% concentration. Then add an organic base nutrient at 30% the recommended strength.
The addition of the organic nutrient will help stabilize the solution chemistry while buffering the salinity and pH value of the synthetic based nutrient in the root zone and growing media. Also, the additional building blocks supplied by the organic base nutrient will increase yields, crop health, flavor, aroma and essential oil production.