Oak extract is a strong acid which is used to acidify aquarium water and lowering the pH.
Sera Toxivec immediately removes ichthyotoxic ammonia and nitrite and binds heavy metals such as lead and copper. First aid in aquariums. Available in 50 and 100ml.
Biomax Freshgen increases the amount of oxygen in water and is used for handling and transport of fish and shrimp. Instantly removes ammonia, sulfide and precipitate in water. Content: 50 gram.