Vi khuẩn phân giải Nitrate cần môi trường yếm khí, trong khi hồ cá lúc nào chất lượng oxygen cũng được bổ sung cao, do đó vi sinh làm trong nước hồ cá hay khử khí độc không thể tồn tại được.

Chỉ số pH rất quan trọng trong nuôi cá cảnh nói riêng và nuôi trồng thuỷ hải sản nói chung.

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https://www.webmasterpro.de/user/cuabien/