If you cant move the tanks to a safe location I don't think there is much you really can do. That stuff is designed to get everywhere.
Right before you set off the bombs...
Turn everything off, air pumps, filters, heaters, etc.
Do a large water change with well aerated water.
Cover the tank tightly with a large heavy towel.
If you have HOB filters, hang them on a bucket of old tank water, drop the media into the bucket and put in a safe place.
Move your air pump to a safe place and cap the lines going into the tank.
Right after you crack the house back open...
Skim the surface thoroughly with paper towels.
Wipe down everything with a weak vinegar solution.
Do another large water change.
Rehang the filters.
Hope for the best.
Basically do everything you can think of to protect the tanks.
Good luck to you.