Let me start by saying these feeding rings have been a lifesaver for my aquarium setup. The round and square shapes offer versatility, and the blue color blends seamlessly with my tank's aesthetic.

The PVC rubber material feels durable and safe - no weird smells or concerns about harming my fish. I've noticed a significant reduction in food waste since using these rings. My bettas and guppies now eat in a more controlled area, and cleanup is way easier.

However, I did experience the suction cup issue mentioned in some reviews. They don't stick very well to glass, especially after a few weeks of use. I ended up using a dab of aquarium-safe silicone to keep them in place permanently.

The floating plant containment works surprisingly well! My duckweed used to get everywhere, but now stays neatly contained within the rings. This has made water changes much less messy.

For turtle owners: these work great as feeding stations! My friend borrowed one for her red-eared slider tank and reported much cleaner feeding times with less food ending up in the filter.

While they're not perfect (some food still escapes occasionally), at this price point they're definitely worth trying if you're tired of chasing floating food particles around your tank!