
I was looking for a filter flow diverter that would not disturb the surface but still create water movement throughout the tank. It sinks quite deep into the aquarium while mainly sticking out horizontally, so it does a pretty good job of helping with proper water movement. It's also important that its presence in the tank is relatively unobtrusive, as it's made of transparent (and decent-quality) glass.

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KEDSUM Battery Aquarium Air Pump: Ultra-Quiet Rechargeable Fish Aerator with Dual Outlets - Ideal for Fish Tanks, Outdoor Fishing, Fish Transportation, and Power Outages
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Humidifier / air purifier "Fanline Aqua VE400" with an ionizer, with a capacity of 410 gr/h
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Steam cleaner Deerma Deerma DEM-ZQ610 EU, white/red
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