Brown blood disease

• Brown blood disease occurs when nitrite levels are too high.

• Nitrite poisonous fish are always cause fish surprise.

• The fish gill not bright red, external of the body look clean and normal, while the internal liver is pale, with bruised black of gallbladder.

• There are several treatments and solutions, including:

 Exchange the water according to the level of toxicity.

 Nitrite level greater than 0.3 mg per liter of water, change 50% of the water twice a week and wait to see how the fish are activities.

 After pumping water, add 0.10 to 0.5 grams of salt per liter of water.

-Nitrite (N02) less than 0.2 mg/L is safe

- Nitrate (NO₂) more than 0.5 mg/L is unsafe and highly toxic.

Photo 07: Nitrite levels