Pot equity checkraise..then missed turn

[Obliky]

I keep doing this and i think its bad..should i be betting this (or pretty much any) turn?

All players are fishy..except MP who is kinda LAG.

Ultimate Bet 0.50/1 Hold'em (6 handed) converter

Preflop: Hero is BB with 4[img]/images/graemlins/diamond.gif[/img], 8[img]/images/graemlins/diamond.gif[/img].
UTG calls, MP calls, <font color="#666666">1 fold</font>, Button calls, SB completes, Hero checks.

Flop: (5 SB) 3[img]/images/graemlins/diamond.gif[/img], A[img]/images/graemlins/diamond.gif[/img], 5[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(5 players)</font>
SB checks, Hero checks, <font color="#CC3333">UTG bets</font>, MP calls, Button calls, SB calls, <font color="#CC3333">Hero raises</font>, UTG calls, MP calls, Button folds, SB calls.

Turn: (7 BB) J[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(4 players)</font>
SB checks, Hero checks ???