what kind of filter do you have? sometimes if you get a bigger filter you can get more water movement. my penguin bio-wheel 150 moves the water well in my 29 gallon, and the plants (not very many, 2 small hornworts) billow nicely in the current.
I run a PH in my 75 gallon planted tank with my XP3. My spray bar is on the left wall and I have a Penguin 200 on the left back then the PH Aquaclear 201 on the right side of the crossbar pointing towards the left front corner.