AC110's Not sucking up debri

[twodaend]

I have 2 AC110's on my 75 gallon. For some reason, it seems as though they are not picking up poop and debri like I would like. Seems as though there is not enough suction being created. The waste seems to gather in a certain location in my tank.

Is there something I can do to fix this and create more of a suction so that the waste gets gather up by the filters. I just did a PWC list night and from the pics you can see how much has appeared since then. I have yet to feed my O and SD's since the PWC, so all of this happened last night.

My 2 AC110's. The waste usually gathers right behind the roman deco and sort of whirlpool right there.

Waste created last night since PWC. This is the waste that gathers behind the roman deco which is between both AC110's intake tubes.

 

[roliva]

Sounds like you need some powerheads to get rid of the dead spot areas.

 

[fish_freak]

Powerheads will help but I think your always going to see stuff on that white sand. With darker substrates the crud blends in and then we just vacum it out.

 

[Needeles]

By chance when was the last time you cleaned out your filters and how often do you clean them. I don't mean just the media but the whole filter case and impeller. Have you adjusted the intake speed on the filter, it may have moved.

I also agree about the powerhead as in larger tanks there always seems to be dead spots.