I've been using the PAGOW Fish Feeding Rings Set in my aquariums for a few months now, and they've completely transformed how I manage floating plants and feeding time. The variety of sizes (five different diameters!) means I can customize the setup for each tank - smaller rings for my betta's nano tank, larger ones for the community aquarium.
The EVA foam material is impressively buoyant yet gentle - it doesn't scratch my acrylic tanks when adjusting positions. Unlike some reviewers, I haven't had issues with plants crushing them, though I do use them primarily with lighter floating plants like duckweed and frogbit. They create perfect little plant islands that make maintenance so much easier.
Where these really shine is during feeding time. My surface-feeding fish now know exactly where to go when it's dinner time, and the rings prevent food from scattering across the entire tank surface. The black color blends nicely with most aquarium setups while still being visible enough for easy adjustment.
After six months of continuous use in both freshwater and slightly brackish setups, I can confirm they hold up well with no signs of degradation. Just be gentle when moving them - the soft foam can tear if handled roughly. For the price, this 10-piece set offers incredible value that has made my aquarium-keeping significantly more enjoyable.