OK - I bet the pot get called and he hits his flush, see hand below.
From this forum I've learned that his call is stupid - right?
Should I overbet the pot to avoid this, or is my play ok?
Also, please rate my play after the turn. Should I just check and fold?

0.25/0.5$ NL 10 plyer

Dealt to Borax in BB

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OpeningBetRound
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SB : Posts small blind 0.25
Borax (BB) : Posts big blind 0.50
UTG : Calls for 0.50
UTG+1 : Calls for 0.50
UTG+2 : Folds
MP1 : Calls for 0.50
MP2 : Folds
MP3 : Folds
CO : Calls for 0.50
Button : Folds
SB : Calls for 0.25
Borax : Bets 3.00
UTG : Folds
UTG+1 : Folds
MP1 : Calls for 3.00
CO : Calls for 3.00
SB : Folds
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Flop

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Borax : Bets 10.00
MP1 : Folds
CO : Calls for 10.00
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Turn

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Borax : Bets 5.00
CO : Calls for 5.00
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River

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Borax : Bets 10.00
CO : Raises for 20.00
Borax : Calls for 10.00
CO : Shows cards
Borax : Mucks cards
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Showdown
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CO
- Flush - A high
Borax
- Two Pair - A's and Q's
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Result
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Borax Mucked Cards
CO Showed Cards (Winning) 79.00
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