extra thin floating feeding ring (1.5mm)

My gold fish's head keep bumping into the thick feeding rings so I made this super thin feeding ring at only 1.5 mm thick with floating devices. 

models include:

1.  floating circle with adapter for 2cm rimmed tank (10 gallon typical)
2.  floating circle with adapter for 5mm rimless tank
3.  floating circle with no attachment

 print with PETG @ 0 % infill.

Like, collect, and boost are appreciated.  Also check out my other models on aquarium accessories.