I use this to make the shrimp pellets I use which stop at the bottom first and then as the fish suck feed they slowly fall to the bottom of the tank. The suction cups work well. I let the level in the tank drop a few inches and then do a water change and bring the level up again when I fill up the tank. I had no problem moving this feeder up and down when the water level changed.
Aquarium Fish Feeder Set - Multipurpose Feeding Ring With Live Red Worm, Plant Cone, Measuring Cup Shape Basket For Betta, Thaw And Feed Fish, Aquatic Pets
20 Review
HBN Automatic Cat Feeder With HD 1080P Camera,Dog Food Dispenser Work With Alexa And Voice Recorder,Wi-Fi Enabled App Control
15 Review
Premium Quality Durable Self-Dispensing Gravity Pet Feeder - Zone Tech 1 Gallon Automatic Food Bowl For Dogs & Cats
45 Review
Feeding Your Aquatic Pets Made Easy With Our Multi-Function Fish Feeder Ring Set
14 Review
Mini pump Xiaomi Mijia Electric Pump 1S, plastic, black
55 Review
π U-BCOO Aquarium Gravel Cleaner Fish Tank: Manual Siphon for Efficient Filter Gravel Cleaning and Water Change in Tanks
22 Review
Efficient 2-In-1 Magnetic Fish Tank Cleaner With Non-Slip Design And Scratch-Free Blades
37 Review
Steam cleaner Deerma Deerma DEM-ZQ610 EU, white/red
68 Review