I’m going to say that it depends.
Are you using a low/no VOC sealant for your basement? If so, then I wouldn’t worry about it. However, if you’re reading stuff like “apply in well ventilated area” and such, then I might be a bit leery.
Turn off your skimmer and cover everything with a large trash bag, own the windows in your basement and run a bunch of fans the expedite the drying / curing process.
I’d just be careful to monitor your tank to make sure you aren’t depriving the system of too much oxygen during the process. 8 hours with no exchange with fresh air could kill everything.