
I bought 3 of these and will be buying a few more soon. But I don't use them to feed fish. I grow duckweed in several of my aquariums and have had many problems with return water from HOB filters blowing duckweed all over the tank. I position them so that the return water from the HOB filters flows directly to these supply rings and the problem was solved. The surface remains pleasant and calm, and the duckweed is happy. If the water level drops between water changes, these feed rings also drop. I am very happy with them.

Premium Quality Durable Self-Dispensing Gravity Pet Feeder - Zone Tech 1 Gallon Automatic Food Bowl For Dogs & Cats
45 Review

PAWISE Automatic Pet Feeder With Timer For Cats And Dogs - 1 Meal Auto Dog Dry Food Dispenser
42 Review

Rabbit Food And Water Dispenser Set - Perfect For Ferrets, Cats, Birds - Small Animal Food Bowl For Rabbits - Ideal For Use In Cages - Oncpcare
15 Review

Depets Automatic Pet Feeder With Timer And Sound Reminder - Portion Control Food Dispenser For Cats And Small Dogs - Battery Operated 6-Meal Auto Feeder For Improved Feeding Routine
17 Review

Steam cleaner Deerma Deerma DEM-ZQ610 EU, white/red
68 Review

Jasonwell Magnetic Aquarium Fish Tank Glass Algae Cleaner - Floating Brush (L Size)
37 Review

🐠 U-BCOO Aquarium Gravel Cleaner Fish Tank: Manual Siphon for Efficient Filter Gravel Cleaning and Water Change in Tanks
22 Review

Mini pump Xiaomi Mijia Electric Pump 1S, plastic, black
55 Review