Water turn abit dark

[TS168]

Hi Everyone, Like to check if anyone know wat happen actually to my water?

As i notice that it change abit brown but water is clear.

Any info or advice?

Best Regard
TS

 

[Lateral Line]

Have you bog wood or similar in your tank? There are tannins which come out of wood which will colour the water brown, in some cases, very dark brown.