I have two ai prime HD’s above a 55 gallon standard aquarium I just recently upgraded from a 20 gallon tall... the problem I’m having is when power heads are going (so all the time) there is a pretty bad flicker of light in the water .. this didn’t happen in my 20 and i am a photosensitive epileptic... so you can understand my quarrel is there any way to help that? If I lowere the trajectory of them it’s not as bad .. although the surface is moving it’s not very agitated .. so I’m kind of stuck