mfdrookie516
Aquarium Free - 2+ Years
My bottle says 5mL per 50G of NEW water. So they are not recommending treating the whole tank.
Since it is a chemical reaction, what matters is that there are enough molecules in the dose for the molecules in the water that need to be detoxified. The Prime is diluted, but so is the water. In this case, treating the volume of new water would work.
But if you are trying to detoxify ammonia in the tank, then go with the volume of the tank.
It is only a guide, because otherwise, they would need to give you a complicated formula requiring you to calculate the concentration of ammonia or chlorine in order to get you the proper dose.
IMHO
G
not trying to argue... but this is straight from the website...
Use 1 capful (5 mL) for each 200 L (50 gallons*) of new water. This removes approximately 1 mg/L ammonia, 4 mg/L chloramine, or 5 mg/L chlorine. For smaller doses, please note each cap thread is approx. 1 mL. May be added to aquarium directly, but better if added to new water first. If adding directly to aquarium, base dose on aquarium volume. Sulfur odor is normal. For exceptionally high chloramine concentrations, a double dose may be used safely. To detoxify nitrite in an emergency, up to 5 times normal dose may be used. If temperature is > 30 °C (86 °F) and chlorine or ammonia levels are low, use a half dose.
Seachem. Prime