Any idea on how long it will take the 2 4 D to dissipate in the pond making it safe to restock?
Good question, I will need to ask but here is what Wiki says.
https://en.wikipedia.org/wiki/2,4-Dichlorophenoxyacetic_acid
In aerobic aquatic environments, the half life is 15 days, while in anaerobic aquatic environments,[clarification needed] 2,4-D was moderately persistent to persistent (half life of = 41 to 333 days). 2,4-D has been detected in streams and shallow groundwater at low concentrations, in both rural and urban areas. Breakdown is pH dependent.[30] Some ester forms are highly toxic to fish and other aquatic life.
