Product Description
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
- MacrosMicros
Nutrient profile
Concentration per 1 ml of product (mg/ml).
- NNitrogen
- 1.00mg/ml
- KPotassium
- 5.00mg/ml
- FeIron
- 1.50mg/ml