Rocks, yes or no?

[Bdun111]

Looking at the system, the pressurized filter is only used with the submersible pump, which is used for circulating the bottom tier water. The external with basket is only used for the waterfall.
Is this normal?
We backwash the system at least once a week, but it has never been taken apart and cleaned. The unit is eight years old.

 

[Gemma]

I originally had gravel on the bottom of my pond. I liked the way it looked, but over time, my water lilies jumped their pots and ran rampant in the gravel. Eventually I made the decision to remove the gravel and was surprised how much muck had accumulated in it.

I miss the look of the gravel, but it's easier to keep my pond clean, without them.

Same thing I went through

OP, I love your pond!