I wouldn't. It might be fine but I'd be worried it get sucked in and crushed. If you have the cash, you could get one of these:

http://www.marinedepot.com/CPR_First...MIATTK-vi.html

I have one I use to acclimate and I like it. I've never used it for qt though. It does have a lid. You might also be able to use a small tank with a hob filter and just throw a piece of LR in from your display.