Because the foam filter has holes that are not homogeneous, the holes are not the same size and are not in the shape of the matrix, so under each foam filter, a perforated coaster is installed which creates an empty space under the filter, which is useful for distributing water evenly across the surface beneath it.

The first filter is to filter large particles, you can use a coarse foam filter or a stainless steel mesh filter
The second filter is for filtering small particles, you can use a fine foam filter
The one-way perforated pipe position without the dividing bar at the edge is used for mesh filters, while the two-way perforated pipe position with the dividing bar in the middle is used for foam filters

There are holes at the bottom of the box.
In front of the box there is an overflow proof, water falls into the First Level Gutter.
The box uses perforated pipes to evenly distribute water over the entire surface of the filter with the help of a divider in front of the holes so that the water falls right in the middle.

Box dimension WLH : 10.4cm x 26.5cm x 12.6cm

aqua-23-remix.stl - remix Second Level Gutter Media Filter Box
aqua-18.stl - two-way perforated pipe for foam filter
aqua-22.stl - one-way perforated pipe for mesh filter
aqua-21.stl - mesh frames
aqua-24.stl - coaster frames
aqua-26.stl - holes base board, sticked it with waterproof glue to the base of the box
aqua-25.stl - box cover

don't print
aqua-23.stl - remix Second Level Gutter Media Filter Box

Cut the perforated water pipe support
The end of the perforated water pipe is closed with 13mm hole rubber

Creality

CR-10 MAX

No

No

Supports: No
Rafts: No

Quality:
Layer height 0.28mm
Shell thickness 0.8mm

Fill:
Bottom/Top thickness 1.2mm
Fill Density 20%

Filament:
Diameter 1.75mm
Flow 100%

Nozzle size 0.4mm