INOUT Overflow – Wave Effect
The Xaqua INOUT is a complete overflow system designed for aquariums with external sump filters. It eliminates the need for holes in the bottom of the tank, removing the risk of catastrophic water leakage associated with traditional overflows.
The INOUT is installed by drilling holes in the side or back of the aquarium, avoiding any internal partitions that would reduce aquascape space. The tank’s total volume remains unchanged.
Its unique construction ensures a quiet operation and creates a natural wave effect on the water surface, enhancing the visual appeal of the aquarium.
The 2016 model features a larger drain, supporting a maximum pump capacity of 660 gph (2500 L/h). Drain and return hoses are available as separate accessories.
| Feature | Specification |
|---|---|
| Max Pump Capacity | 660 gph (2500 L/h) |
| Installation Method | Holes in side or back of aquarium |
| Water Flow Effect | Wave effect on surface |
| Noise Level | Quiet operation |
| Compatibility | Aquariums with external sump filters |
FAQ
How does the INOUT overflow differ from traditional overflows?
The INOUT overflow eliminates the need for bottom holes in the aquarium, reducing the risk of water leakage. It is installed on the side or back of the tank, preserving the aquascape and maintaining full tank volume.
What is the maximum flow rate supported by the INOUT overflow?
The INOUT overflow supports a maximum pump capacity of 660 gph (2500 L/h).
Is the wave effect adjustable or customizable?
Please contact customer service

Sally McLean –
The INOUT overflow works perfectly with my 55-gallon tank. No water leaks, and the wave effect adds a nice visual touch. Installation was simple and didn’t require removing any rocks or plants from the bottom.
Thomas Hemmings –
I installed it on the back of my tank and it’s very quiet. The wave effect is subtle but pleasing. I didn’t have to drill into the bottom, which I was worried about with older models.
Sally Lyman –
Great product. No leaks after two months of use. The water movement looks natural and the system handles my filter’s flow without any noise or pressure issues.