Neptune Systems ATK Automatic Top-Off

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Works standalone. No controller required.

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$ 380.00

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Neptune Systems ATK is the safest standalone automatic top-off system in the world. The ATK monitors water level and trigger a water top up automatically, and saves you the trouble of topping up water.

Why Automatic Top Off

As evaporation occurs, your aquarium loses water, and this could be danagerous for saltwater aquarium since salinity level could escalate.

The Neptune Systems ATK has everything you need to automate the topping off of water in your aquarium with the security of three levels of disaster prevention and a 3-minute standalone set up.

The Neptune Systems ATK monitors key parameters of the aquarium and triggers the pump to work and sends new water into the aquarium until the water parameters are back to the optimal range.

The ATK can function on its own without an Apex Controller, but if you have an Apex, the ATK will integrate seamlessly into your existing system and provide many additional options.


Neptune Systems ATK specifications:

  • Dual Optical Sensors
  • Float Valve
  • Includes PMUP and Tubing
  • Strong Magnetic Bracket
  • Multiple Levels of Safety
  • Compatible with any Apex

Neptune Systems Online Shop

N30 is the authorised dealer in Singapore for Neptune Systems aquarium controllers and sensors.

Order your Neptune Systems products online today at

About N30

About N30 Tank

N30 Tank Pte. Ltd. is a leading manufacturer of custom-made fish tanks cabinets. As a tank maker, we supply aquarium cabinets to homes and offices locally as well as ship orders worldwide.

N30 provides expertise in the construction of large acrylic aquariums, such as those in Underwater World (Resort World Sentosa). We supply customised storage tanks to fish farms such as Qian Hu, and to major restaurants. The N30 brand name is trusted for quality workmanship in the industry.

N30 has developed unique glass-sealing techniques, which allows us to produce very large tanks (such as 30-feet long) without issue of water leakage. For all custom-made fish tanks, N30 assures customers of Five Years Warranty against water leakage.

To support the needs of aquarium hobbyists, N30 is also offering a wide range of aquarium accessories such as filters, pumps, lighting, wave makers, skimmers... for sale online. We encourage customers to browse and shop online at for accessories. It is convenient and we provide free delivery for orders (see the online store terms and conditions for details).

Loyalty Points

Loyalty Points (N30 Member Rewards)

Earn 5 points per dollar

N30 members earn five points per dollar spent online at Each point is worth S$0.01 in cash value.

Convert points into eVouchers redeemable for discounts on your orders.

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When you purchase S$100 of aquarium accessories online at, you will earn 500 points in your N30 account. You may convert the 500 points into an eVoucher worth S$5. To use this eVoucher on your next order, simply enter the unique eVoucher code in your shopping cart before you check out. That's all!

The more you shop on, the more you will save on your next order!

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