JBL Tropol quickly converts aquarium water to tropical water with the typical properties of black water. The combined effect of peat + oak + iodine makes fish feel as if they were in their natural habitat. JBL Tropol promotes the health of the fish through the humic substances of peat and the tannin of oak bark.https://www.aquaristikshop.com/aquaristic/JBL-Tropol/125450/
- Konstantinos M. wrote about JBL Tropol in 2016:
Very good black water extract.