In a 55 it shouldn't be that bad. Where is the spray bar located?
I'm using mine in the 75 gallon and it fits perfectly on the side wall.
I would cut the spray bar to fit on the side wall of the 55 and then drill the holes out a bit to disperse the forcefulness of the spray.
Or
Aim the spray bar more straight then down and the force will hit high and spread from there.
In the 75 I have it just under the water and pointed straight enough to where there is a ripple on the surface but the flow goes the length of the tank to the intake. I also have a PH on the right side in the back to push the water back to the left towards the Penguin 200 which sits in the middle of the tank.
I'm using mine in the 75 gallon and it fits perfectly on the side wall.
I would cut the spray bar to fit on the side wall of the 55 and then drill the holes out a bit to disperse the forcefulness of the spray.
Or
Aim the spray bar more straight then down and the force will hit high and spread from there.
In the 75 I have it just under the water and pointed straight enough to where there is a ripple on the surface but the flow goes the length of the tank to the intake. I also have a PH on the right side in the back to push the water back to the left towards the Penguin 200 which sits in the middle of the tank.