I've been having a problem with sand becoming stirred up to the point of digging right down to the glass bottom.
I have 2 Aquaclear 110's hanging in the tank, and one pumping up from the sump. I have tried every variation with the flow directions, but it never helps. The output hangs roughly midway from top to bottom.
I tried placing some LR
in the front of the tank to disrupt the flow somewhat..which helped a bit.
Should I just angle everything to the surface? I was concered about low flow in the lower areas of the tank, and already have decent surface action as is.