Need advice on how to eliminate dead spots.

[DesignNerd]

My rock work is an arch. I have detritus and waste build-up in the back left corning and in the center. There is an additional rock in the back left corner that may be preventing some flow. The back wall also gets some detritus as well.

35 gal Waterbox AIO
Mighty Jet return pump 500gph-ish that I've increased to 1.6
Nero 3 in the top right on the back wall usually runs random 10%-35% during the day.

I have a mainly LPS tank and I don't want to blast everything.

Any advice? Thinking about adding a second Nero 3.

 

[fishski13]

maybe add a nero 3 that runs from left to right