Corner overflows

[AZBeers]

Was wondering if anyone has done anything with bottom of overflows? I don’t mind cleaning but, with pipes in there make it a little difficult.
Thinking there might be a better solution.
I was thinking of either putting in cheap power heads or maybe Maurine pure spheres for biological. What would be your opinions?

 

[JBKReef]

The spheres is an intersting idea... will help fill up the empty space, bump up bacteria population and with the low flow.

I believe @Lasse uses a plugged up corner overflow for a deep sand bed to promote a nitrification export method.

 

[Lasse]

Type of. See the first page of my build thread for details

Sincerely Lasse

 

[ESH]

I've been using a tube feeder to blow / stir up debris every so often, though only thing I really see in there is a larger bits of crab shells.