| ≥1 piece | 1100 |
Efficacy:
1. Decrease the density of ammonia nitrogen, hydrogen sulfide and nitrite in the water.
2. Adjust and stabilize the PH value and restrain the growth and reproduction of harmful alga and pathogenic microorganism.
3. Increase the dissolved oxygen in the water and develop high-protein fish bait.
4. Maintain a balanced micro-biology circulation in the animal body and promote the immunity.