2-5 NL semi-deep stacks. how much to turn bet if at all......

[arod15]

2-5 NL Effective Stacks 1200

Hero Delt 10 [img]/images/graemlins/diamond.gif[/img] 10 [img]/images/graemlins/heart.gif[/img] in the BB (my image is supertight)

MP opens to 25 (laggy)

CO cold calls Hero Calls (super donk)

Flop K [img]/images/graemlins/club.gif[/img] 10 [img]/images/graemlins/spade.gif[/img] 2 [img]/images/graemlins/club.gif[/img] with a flush draw (Pot 77)

Hero checks
MP checks

CO bets 100$

Hero Calls MP Calls

Turn is 10 [img]/images/graemlins/club.gif[/img] (pot 375)

Hero checks
MP bets 200
CO cold calls 200$

Total Pot is now 775$

Whats my line? Raise? If so how much? or should I just call and let action develop on the river?

Thanks in Advance