Hello,
Thanks for the comments!
@Steelbrewer: It's not a steal, rather than a value raise. As you correctly pointed out, it's totally pointless to steal 30 chips 
As played I will explain my line in this hand and I will appreciate if you tell me what you think.
Some intital information. The guy in the BB is very week LAG, i know him from previous tourney. So my line in this hand was to take his chips before the other players do.
1. Pre-flop; the 4XBB rase is kind of standard early game
2. Flop: Cbeting to both for value and to get idea where I am in the hand
3. Turn play. I know it looks very weird that I check push when the second Q arrive.
But lets think for a second. What Q type hands he can have that will make sense for his passive play on the flop; AQ; KQ, I am sure he would definitely 3bet (flop). QT was the only possible Q hand I was putting him on, but I figure its way more likely for him to have either week Ax or K type hand (KT; KJ maybe).Flush draw was also a possibility. But to be honest I was giving him more creadit for Ax Kx than flush.
Therefore I decided to check turn to him to let him bluff. If he bluff and I 3bet push the turn, first of all it looks very strog if he has Ax he would have very hard time calling (so no chop). Kx tupe draws will feel obliged to call (pot odds) and he will be drawing pretty thin.
His bet is very big slightly over PS. I don't think that he would over bet AQ in KQ in that spot. So I told he is on KJ; KT or A rag and put the pressure back at him.
Let me know what you think. I know is kind of very aggressive line, I would definitely won't do it against a decent opponent, but in this case it seemed good idea.
Cheers!