JBL The 7+13 Balls are the iconic special clay spheres enriched with iron and trace nutrients. Inserted deep into the substrate, they act as a slow-release fertility reserve (depot). They are an absolute must to feed the vigorous roots of species like Echinodorus or to regenerate inert substrates exhausted by years of setup.
Recommended dosage
Method
Root tab
Nutrient profile
Macros
Micros
Nutrient profile
Concentration per 1 ml of product (mg/ml).
N
1.00 mg/ml
K
5.00 mg/ml
Fe
1.50 mg/ml
Full table
| Parameter | Simbolo | mg/ml |
|---|---|---|
| Azoto | N | 1.00 |
| Potassio | K | 5.00 |
| Ferro | Fe | 1.50 |
