Bio-Ring Large Excel is selected for large areas 600 m² per 100 g offering an ideal work space for nitrifying and denitrification of bacteria.
Bio-Ring Large Excel is most effective in aquaria with fish varying in size from 7 to 30 cm, for example: marine fish, cichlids, discus, and other large fish.
| 0,6 L | 1,2 L | 2,5 L |
| AN BRL 07 550 | AN BRL 07 552 | AN BRL 07 554 |
