$215 Amount to raise here?

[1C5]

I am new to MTTs so I know these are simplae hands but wondering the raise amount here. No real reads here.

PokerStars No-Limit Hold'em Tourney, Big Blind is t50 (9 handed) Hand History converter Courtesy of PokerZion.com

MP1 (t9550)
MP2 (t9762)
MP3 (t9375)
CO (t8425)
Hero (t10325)
SB (t9263)
BB (t8800)
UTG (t15025)
UTG+1 (t9475)

Preflop: Hero is Button with 7[img]/images/graemlins/spade.gif[/img], 6[img]/images/graemlins/spade.gif[/img].
<font color="#CC3333">UTG raises to t150</font>, <font color="#666666">3 folds</font>, MP3 calls t150, CO calls t150, Hero calls t150, SB calls t125, <font color="#666666">1 fold</font>.

Flop: (t800) 5[img]/images/graemlins/club.gif[/img], J[img]/images/graemlins/diamond.gif[/img], 4[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(5 players)</font>
SB checks, <font color="#CC3333">UTG bets t300</font>, MP3 calls t300, CO folds, Hero calls t300, SB calls t300.

Turn: (t2000) 3[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(4 players)</font>
SB checks, <font color="#CC3333">UTG bets t300</font>, <font color="#CC3333">MP3 raises to t900</font>, Hero ?