Aquarium Floating Ring with optional Thermometer Clamp

Floating rings for aquariums that come in different sizes. The rings can be used to keep floating plants in or away from certain areas. A small loop on the side allows to bind the ring via cord to a suction cup and prevent it from drifting around in the aquarium. 

Optionally a clamp can be attached to the ring. The clamp is designed to hold normal glas thermometers (diameter ~11.5-12.0mm), making floating thermometers because of too old suction cups obsolete.

All parts can be printed without support and should not require a brim. I got good results with a 0.4mm nozzle, 0.2mm layer height and 15% infill.