No, not using any filtration for the solids. Both tubes have gravelle so it stay mostly at the water outlet en the top tube. I left the last hole onthe tube open and didn,t fil it up with gravelle.

Do you think I should use a filter with this small system?

Next time I will be posting a photo of my new dsign for the 125 gal. Pond System.

Thanks so much for all your good coments and help.