I would have bet the turn as well. I would have put in a bet of $80-$100. Here's why.

If he's ahead, he has A8 or 22. AA, KK would have reraised pf; 88 is too unlikely.
Otherwise, he's on a FD, has a smaller pair or is stubborn with his 2 overs (AQ, AJ, AT).

On the flop, he doesn't know if you are just c-betting or have an actual hand. I can see any of his possible holdings just calling here. His monsters don't want to scare you off; he's not ready to lay down a pocket pair yet; he could be chasing his flush.

Now, on the turn, a 1/3 pot bet looks like a blocking bet. He probably puts you on a) a flush draw b) a pocket pair you aren't quite comfortable with or c) making a weak 2nd bluff.

If he has a monster, this is the place where he has to reraise you. He has to try to get your money in on the turn in case you are drawing. You can be fairly comfortably lay down to a substantial reriase (unless he is really capable of bluff reraising here).
If he's drawing to the FD, you are just barely denying proper odds. But he probably just flat calls.
If he has a smaller pocket pair, he's likely to think his hand is better enough of the time to justify calling here. It also sets him up to call a value bet on the river as well.

I don't mind your check raise, but you either win $120 when he folds, or lose it all if he's got the monster.

Betting 80-100 on the turn, IMO, loses you only that amount when he has a monster. When you have the best hand, you winn the turn bet and a good river value bet of another 100-150 when he has a pair. I like this a little bit better.

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