Need Help!!! House tent is going up....

[REDDAWG43]

We came to the conclusion that due to termites we need to tent the house. I have a 65g tank drilled. What can I do to protect the tank?
The tent will be up on the house for 24hrs with gas inside, then for 12 hrs post the initial 24hrs the house will be all open airing out.
Basically the tent will go up on Friday @ 7am, then comes down on Saturday @ 7am, finally the house will air out until Saturday 7pm.
If all goes well, we should be back at the house Sat late night.
I was think of doing a 50% water change the day before, then sealing the the tank in heavy duty plastic wrap to keep the gas from contacting the water.

Does anyone have any idea if this would work, or what they did when they were in the same situation? All advise would be grateful! Thanks!!