Pond Prime is identical to the regular aquarium Prime.
The explanation given earlier in this discussion is correct;
They are the exact same product and concentration. The dosage for a pond is less because a pond has more surface area that can gas off some chlorine. If you use the Pond Prime for an aquarium please use the normal aquarium Prime's dosage directions.
I'm not sure why that is so difficult to understand? How fast chlorine will dissipate is dependent on a number of factors, but mostly based on the level of chlorine when it leaves the water treatment facility, the amount of bacteria that it reacts with along the way, and how far one is from the original source. If you have chloramine treated tap water, different situation as it will generally remain at full strength for the entire run.
I know a number of people in the hobby that have such low levels of
chlorine at their end, that simply spraying their tap water in to their tank and/or pond removes any & all residuals, hence they don't use any form of water conditioner, and never have.
The only way that one can truly know how much Prime (or whatever) to add to their tank is by knowing what quantity of chlorine or chloramine is being added by their local water treatment facility, or more importantly, what the rate is as it leaves the facility for end use. Without that data, it becomes purely hit or miss. This is exactly why Seachem has a recomended dosage rate on the label on their regular Prime.
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
and
If temperature is > 30 °C (86 °F) and chlorine or ammonia levels are low, use a half dose.
The President/CEO of Seachem (Dr. Greg Morin) the inventor of Prime, is a PhD holding scientist, and you don't think his company has ran tests to determine how much Prime is required to remove chlorine/chloramine? Seriously?
Some of this you have to figure out on your own, you can't simply add 1 capful of Prime for every 50 gallons of new water without knowing what you personally are dealing with at your end.
IME Dr. Greg Morin is a very down to earth, no BS kind of guy. If you have any questions that a rep isn't able to answer, my advice would be to email Greg directly.
greg@seachem.com