Well, all the fish in the tank are now potential carries so no real reason to seperate any. Once you introduce any new, unquarantined fish into a tank full of fish you must treat all fish as potential carriers.
Usually silicone cures in 24-48 hours but can take longer and may still release toxic substances. An indication is by the smell, if it still has a strong smell I would wait a bit longer, though even "safe" glue may still have a smell. Typically i've filled tanks & allowed them to sit for a week or more just to be pefectly safe. This also gives me the opportunity to observe the tank in case there are any leaks. I usually change the water out at least once and have even gone as far as adding extra water conditioners in hope that it might help detox. Might be a bit overboard but then why risk it. Like I said before, all fish that have been exposed should be treated the same as all should be considered infected. No sense removing fish at this point as, if any were sick, you risk reinfecting all the others if reintroduced into the same tank. Therefore, no reason not to wait longer than the 24-48 hours for the silicon to cure.
