Is Blackwater Extract good for a Silver Arowana? And will it affect my other fish in the same tank (Parrot Fish)?
No. Brackish water setups usually have higher pH and hardness levels. Tannins lower the pH if your hardness levels are low which in brackish setups, this is not the case. Perhaps you are confusing this with something else?mfk4life;2737214; said:isn't that stuff for brackish water fish...