Chaiyaphum Will the upper filter tank water flow to the minimum affect the cultivation？

Will the upper filter tank water flow to the minimum affect the cultivation？

　　I used a 1500-flow Barracuda inverter pump with a maximum of 100 gears. In order to prevent overflow, I adjusted the gear to 45 gears, but the water flow was quite large.The problem now is that there is sound, which affects sleep at night.I adjusted the gear to the first gear.The sound is much better.Will adjusting the water flow to the minimum will affect the cultivation of bacteria!This is the question I want to say========How did the fish friends of the Xianglong Aquatic Alliance comment==

　　Brother Tu Hao Yu Yu said: appropriate
Gathering nine pictures to summon the dragon, Yuyou said: As long as you can move it, it will be good
Lone Ranger 007 Yuyou said: The pump is fast but not good, the bacteria is too late to treat the water
Lone Ranger 007 Yuyou said: suitable
Full fat fish meal price:
How much is a ton of feed fishmeal^
Fishmeal price today price@
Mackerel price
Fishmeal price trend% Sambalpur Aquarium。