C-UGF Corner Under-Gravel Filter — triangular corner filter for shrimp tanks · 3D-printed

LOADING…

01 · Lid

Open it and the difference shows.

The lid keeps shrimplets and substrate out of the media chamber — removable by hand.

02 · Footed base plate

The whole substrate becomes a filter.

It creates a suction chamber underneath, pulling water evenly through the full ~1.2 L media column.

03 · Airlift tube

Runs quietly on air.

An external part — pull it out to flush, siphon, or replace for pennies.

Every shrimp tank has one spot the flow never reaches: the corner. Debris settles there, water stagnates there. The C-UGF claims exactly that spot — a triangular corner-fit filter that saves swimming space, keeps the scape clean, and eliminates the dead zone entirely.

Triangular corner fit~1.2 L media chamber2 mesh windowsRemovable airliftShrimplet-safe

INTRO VIDEO

Real-tank footage of the C-UGF running at our farm — coming here within days.

C-UGF exploded view: lid, footed plate, sliding window panel, triangular body, 3-piece removable airlift

📐Triangle in the cornerHugs the tank corner — saves floor space, looks clean, and turns the dead corner into a working filter zone.

🧱~1.2 litre media chamberFits Sula Sand + crushed coral for Sulawesi tanks, or Geilee substrate for Caridina — a filter that doubles as a mineral buffer.

🪟2 mesh windowsVery open flow, yet shrimplets cannot enter the media chamber; the window panel slides out for easy cleaning.

🔧External 3-piece airliftClogged? Pull it out and flush. Dirty? Siphon through the port. Worn? Replace any segment for pennies — the body stays put.

~1.2 L

Media chamber

13×14

cm corner footprint

18.4

cm tall

Mesh windows

C-UGF specs

Type: Corner undergravel filter, air-driven
Footprint: Triangular 13 × 14cm
Height: 18.4cm
Media chamber: ~1.2 L (78 cm² × 15 cm)
Mesh windows: 2 — open flow, shrimplet-safe
Airlift: External, 3-piece, removable & replaceable
Power: Air pump — no motor in the tank
Material: Aquarium-safe PETG

What tank sizes does it fit?

18.4 cm tall — fits common shrimp tanks from 25–50 cm. The triangular section hugs any right-angle corner.

Can shrimplets get sucked in?

No. The intake windows are meshed, so shrimplets cannot enter the media chamber.

What if the airlift clogs?

Pull the external airlift out, flush it, push it back — no need to lift the body or disturb the substrate. It splits into 3 segments; replace only the worn one, cheaply.

Is 3D print aquarium-safe?

We use neutral PETG — no leaching, no colour bleed. Field-tested in our farm for months.

C-UGF Corner Under-Gravel Filter — triangular corner filter for shrimp tanks

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