125 gallon w/ 45 gallon sump flow issues

[SKinsey]

About 3 months ago I combined a 55 gallon and 65 gallon saltwater aquarium into a 125 gallon tank that I had reconditioned. I used a 45 gallon breeder for Sump. It has 2 filter socks from seperate 1.5" returns that are drilled, a heater chamber, chaeto bay, live rock bay w/ ceramic bio cubes, and a filter wall, and a USA but I don't feel like I'm getting good return from the system to the sump and can't run the Current EFlux 1900, but can't get it past 50% max and not sure if that's enough. Been running 2 HOB while cycling but need some help getting the tank to drain faster. Couple of pics for reference. And this is my mid day light, it runs .5 white for 1 hour, blue only after, on the recommended settings for corals. No issues with water quality with current filters but want to remove the 2 C4 fluvals, Any suggestions?

 

[KrisReef]

The only way you might speed up a flex hose return pipe is to remove any uphill runs like the one shown entering the sump. But having it sloped down the entire run you may pick up speed? The other flow reducer is(are) the screens on the entrances to the return pipes. Adding a 90elbow on the straight screened pipe so that the entire screen is submerged would allow a fast flow, maybe even get a siphon started? HTH.

 

[SKinsey]

The only way you might speed up a flex hose return pipe is to remove any uphill runs like the one shown entering the sump. But having it sloped down the entire run you may pick up speed? The other flow reducer is(are) the screens on the entrances to the return pipes. Adding a 90elbow on the straight screened pipe so that the entire screen is submerged would allow a fast flow, maybe even get a siphon started? HTH.

Thanks! I moved the far right pipe up 2" where it was sagging and it increased the volume quite a bit! Must have been some sort of air blockagage as the siphon burped and then started flowing like a champ! Looking for some 90 screw in elbows so I can try the additional suggestions as that would make sense from a flow stand point as well. Able to run the pump at 80% now so much better flow! Thanks. It was a simple fix!