Thanks for your feedback. It’s temporary. I pulled rock out of the display and placed in sump to get it out of the way for me to more easily vacuum the sand. And fewer rocks to harbor dinos and need to be cleaned. I jiggle the few rocks in the sump and stir that chamber from time to time. NO3 and PO4 suggest I’m in OK territory for what’s in the tank, right?Wow you have so much going on in the sump area.how do you mean that? Are it you worried of the food leftovers in all these rocks that will sit to decay over time?
Socks look dirty, do you clean the socks?
The photo was most likely taken after a 3-4 day run. Yes, filter socks dirty. They get swapped out with a clean set 2x a week on day 3 or 4.
There’s also a filter media basket seen in the pic that’s full of rubble.
It’s a small footprint so it looks pretty tight. But all in all there seems to be good flow through it and not much detritus collecting.