curing silicone sealant fumes harmfull to fish?

Hello;

I have a 210 gallon all-glass reef tank which was just how I wanted it and
nice and stable. Unfortunately is started leaking Sunday about 5 gallons/hour
out the bottom. I've transferred everything to a 125 fish only and set up a 75
for the corals, clams, some of the fish, etc which is crowded as hell but seems
stable for the moment. The tank is no longer warranteed so it looks like I'm
going to have to reseal the bottom with silicone. Having worked with this
before (like buillding a sump) I know it puts out those nasty vinegar fumes.
The temporary tank is very close to the one I need to reseal. Even with fans
and open windows I know it will really stink for awhile. My question is are
these fumes harmfull to the aquatic life in the temporary tank in the same room?

thanks;

Bob

(any suggestions for this repair appreciated)