10NL: when to push a flopped flush

[kflip]

Hi guys!

There was this situation some minutes ago when I flopped a 6 high flush, someone bet, I raised it pot-sized, he reraised back, so we both had about half our stacks in then (effective stacks: 110 BB)
I'd post the history, but neither FTR nor Bad Beats and Good Vibes supports it.

So whatever, here're my questions:

When do you push a flopped flush when you get this kind of action? With what high a flush do you push and for how many BBs?

[eMbAh]

If half your stacks are in you can safely push, but he might have a higher flush

[kflip]

so I did actually, but what if the effective stacks are deeper? What's your guess of the max. remaining stack to pot ratio to make a push profitable? How can one figure that out? I think since there's no way to call, I have to either push or fold?