pushing with top TP on the turn with flush board

[rwb78]

Against a pretty loose player I push the turn with top two pair on a flush board. What is your opinion on this play?

greetings,
Rob

PokerStars No-Limit Hold'em, $0.25 BB (6 handed) by Hand Converter CG

saw flop|<font color="#C00000">saw showdown</font>

<font color="#C00000">Hero ($28.50)</font>
UTG ($30.25)
MP ($9.35)
CO ($23.65)
<font color="#C00000">Button ($24.65)</font>
SB ($8.90)

Preflop: Hero is BB with K[img]/images/graemlins/club.gif[/img], Q[img]/images/graemlins/club.gif[/img].
UTG calls $0.25, MP folds, CO calls $0.25, <font color="#CC3333">Button raises to $2</font>, SB calls $1.90, Hero calls $1.75, UTG folds, CO folds.

Flop: ($6.50) 4[img]/images/graemlins/heart.gif[/img], K[img]/images/graemlins/heart.gif[/img], 9[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(3 players)</font>
SB checks, Hero checks, <font color="#CC3333">Button bets $3</font>, SB folds, Hero calls $3.

Turn: ($12.50) Q[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#CC3333">Button bets $4</font>, <font color="#CC3333">Hero raises to $23.5</font>...

(edited irrelevant data after last Hero action--aj)