Review on 🐠 ISTA Undergravel Filter 11.8" X 5.9" - Premium Aquarium Under Gravel Filter by Jenna Perez

I don't quite understand what it's good for other than a bubbler. The food slides through the pebbles/rocks we use and just stays at the bottom of the tank until I clean it. This actually complicates the task as feed and fish waste are no longer available to the gravel cleaner. Cleaning now requires a full cleaning of the tank. Be aware that this is in no way a filter. This is a bubbler. A very strange bubbler.