The Victory sit sixth on the table with 17 points from 14 matches and face a tricky road trip to Perth to take on the Glory on Sunday.
Merrick knows that it is important to begin to string some positive results together before they lose touch with the top few teams.
"I think we've always been pretty patient as coaches. We don't chop and change. We really work and develop what we have at the club and I think we've got the quality to work with, but at the same time there's that sense of urgency," Merrick said.
"It's about getting points now. It's not about waiting for this player to come in or that player to come in. We feel we've got the players now and they've underperformed."
And Merrick heaped extra pressure on his strikers (save Robbie Kruse) who have failed to fire for the most part this term.
"There's no doubt we haven't performed in the front third of the pitch," Merrick added.
"It's been very frustrating. We've consistently put out the same defence, midfield and goalkeeper. In the last nine games, I think we've conceded five or six goals, one of which we scored, with five clean sheets in there.
"It's really about taking our opportunities early on."