Too much flow?

[Gordon15]

2 Hydro 2450 on the sides and 2 Hydro 425 are in the back centered. Should i point or move them down? Is this too much flow? Not enough?

I have a HOB tidal filter and reef octopus 2000.

thanks again

 

[Doctorgori]

you got sand, I define too much flow is when it blows around…
Any way you can blow one lower/deeper across the back?