How much to value bet

[NLHE lahooozaher]

$25nl, 6 playas, effective stacks are $25.25.

Villain(24/11/4.5) open limps button, I raise to $1.25 in the SB w/QQ, BB folds, button calls

Flop is Q 73 w/2 diamonds
I bet $2, he calls

Turn is a 3 and puts up a second flush draw
I bet $3, he thinks for a long time and calls

River is Td
He has a flush how much do I bet here?

[bigspenda73]

I like to c/r here unless villain has a high river AF and will raise a bet. If he has a high river AF I bet small hoping to induce a raise. The problem with the b/3bet is you will have a helluva time getting paid instead of checking, hoping he bets 2/3 potish and you can push.

[Numbr2intheWorld]

Bet half pot if you know he's going to raise a flush. And i don't think the villian has a flush if he tanks the turn.