Thanks for the help. I'll pick up some Quick Cure today.

If I leave the lights off for that long, would it be better to disconnect
the CO2?

The drip system I have actually works really well. I just turn on the tap,
and drip filtered water into the tank. The "old" water flows out through a
siphon and overflow box I rigged up. Saves the hassle of lugging buckets of
water to the tank.

Once again, thanks.