Regular stopper Paul Jones has conceded 11 goals in his last four league appearances and manager Paul Tisdale has a fit-again Krysiak at his disposal after illness.
Midfielder James Dunne recovered from illness to start against MK Dons in a 1-1 draw and should continue alongside Ryan Harley, who will remain at the club after a bid from Brighton was rejected.
Leading-scorer Jamie Cureton scored his ninth league goal of the season against the Dons, in a week where he committed himself to the club until the end of the season, and should partner striker Richard Logan at Griffin Park.
The 35-year-old faced a barrage of abuse from Bees fans at St James' Park earlier this season. Cureton scored the goal for Reading in 2002 that secured the club's promotion at the London outfit's expense.