$100NL - Turned trips on paired board w/ nut flush draw

[allrightfine]

Villian is 25/17/4.6 after 190 hands

What is your turn play here?

Full Tilt No-Limit Hold'em, $1 BB (6 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

MP ($141.80)
CO ($39.50)
Button ($128.70)
SB ($167.70)
BB ($131.10)
Hero ($103.20)

Preflop: Hero is UTG with A, 2.
[color=#CC3333]Hero raises to $3.5</font>, MP calls $3.50, [color=#666666]2 folds</font>, SB calls $3, [color=#666666]1 fold</font>.

Flop: ($11.50) 5, K, 2 [color=#0000FF](3 players)</font>
SB checks, [color=#CC3333]Hero bets $6</font>, MP folds, [color=#CC3333]SB raises to $20</font>, Hero calls $14.

Turn: ($51.50) 2 [color=#0000FF](2 players)</font>
[color=#CC3333]SB bets $30</font>, HERO ?