I wanted to add flow to my 1100g and got this for $30 on amazon: SunSun JVP-402A 6340GPH Dual Aquarium Wavemaker Powerhead with Suction Cup https://www.amazon.com/dp/B008EKKSPU/ref=cm_sw_r_cp_api_cqwzAbJVN2QN1
I placed it at the top of my tank point down to blast any debris in the rocks/dw.
Here is a video of it in action:
You can see the food gets pushed to the front of the tank instead of getting caught in the rocks.
I have this pump exactly 1 year.
Jesus, that flagtail's huge.