Description
Aqua Excel RO Automatic Replenisher
Keep your water level and salinity steady automatically with the Aqua Excel RO Automatic Replenisher, a float valve auto top-off for RO (reverse osmosis) water in marine and reef aquariums.
In a saltwater aquarium, water evaporates but the salt stays behind, so salinity slowly rises as the water level drops. The replenisher solves this by topping up with fresh RO water as the level falls, keeping both your water level and salinity stable without daily manual top-ups. Stable salinity is especially important for corals and sensitive invertebrates.
It works simply: as the water level drops, the float lowers and opens the valve to let RO water flow in, then closes again once the water returns to the set level. The mounting bracket fits on the side of your tank or sump, the float arm is adjustable to set your preferred water height, and the inline shut-off tap lets you stop the flow for maintenance.
Key Features
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Automatic top-off: Replaces evaporated water with RO water as the level drops
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Stable salinity: Prevents salinity rising from evaporation
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Protects sensitive livestock: Stable conditions for corals and invertebrates
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Simple float valve: Mechanical operation with no electronics or power needed
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Adjustable float: Set your preferred water level
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Shut-off tap: Stop the water flow easily for maintenance
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Mounting bracket: Fits on the side of your aquarium or sump
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Saves time: No more daily manual top-ups
Suitable For
Marine and reef aquariums and sumps topped up with RO or RO/DI water
Product Specifications
| Specification |
Details |
| Brand |
Aqua Excel |
| Type |
Float valve auto top-off (ATO) |
| Water Source |
RO / RO/DI water |
| Operation |
Mechanical float valve (no power required) |
| Features |
Adjustable float, shut-off tap, mounting bracket |
| Suitable For |
Marine and reef aquariums and sumps |
Please note: Only use RO or RO/DI water for top-up, never saltwater. Check the valve regularly to make sure it opens and closes freely. When connected directly to a pressurised RO unit, a stuck valve could overfill your tank, so a backup safety measure is recommended.
