Aquarium feeding ring with suction arm
A feeding ring stops flakes drifting into the filter intake and concentrates food where slow fish can find it. The ring is 80 mm in diameter with a 10 mm tall hollow rim 1.2 mm thick so it floats, joined by a 40 mm arm to a 20 mm cup that accepts a standard suction cup stem of 5 mm. A 1 mm fillet on the inner rim edge prevents food snagging, and PETG or PLA are both safe once rinsed.
SpeakCAD sizes the ring for your tank and your fish's appetite, so you are not stuck with a ring too large for a nano tank or too small for a community set-up. Widen the arm to reach past a rim brace in the chat and preview free in the browser before downloading.
Create a floating feeding ring 80 mm outer diameter with a hollow rim 10 mm tall and 8 mm wide using 1.2 mm walls, a 40 mm arm 6 mm wide, and a 20 mm diameter cup 6 mm deep with a 5.2 mm hole for a suction cup stem.