Sorry dont know forsure, Bump for a needed reply, With any sealant I have done, car or anything I always give it at least 3 days. Thats what I would do if they say 48 hrs. I never have problems after that point. I give it more time just mostly because of temps being less and needing more dry time. You seem to have allot of good tempeture and such so I would bet 48hrs would be enough but I would give it a bit more just to make sure, also fill it and make sure its good before you put everything in there.
125 Gallon Cichlid tank
NEW PEACOCK BASS !!!!