Heart delivers a high quality humic acid to the soil rich with microbes. While humic acid may facilitate nutrient availability giving the plant life; the rich microbial diversity gives the soil life. Heart is the foundation of all fertility programs, providing a continual food source to beneficial bacteria. The mineralization of carbon is initiated making nutrients and minerals available that may aid in plant growth. 
 
Soil Application
The following recommendations are a guide to help maximize plant growth by optimizing nutrient available during plant development. Heart should be applied at a rate of 30 ml/gallon of water. 
Heart can be applied throughout the growth cycle. Application rates can be adjusted depending on soil type. For Flood irrigation, Apply 5 gallons/acre.  Repeat application once a month. Recommended for all new plantings.
Hydroponic Application
For hydroponic use apply Heart at a rate of 2.5 ml/gallon. Allow the solution to settle prior to application. Reduce application rates during early flowering and late flowering. Adjust pH as needed.