More robust power supply
A sturdier power supply built for years of around-the-clock use.
ReefBreeders ATO
Stable water level.
Stable water level.
Fully automated.
A complete auto top-off kit that's reliable, easy to set up, and clean looking in just about any reef system. Everything you need to start maintaining your water level automatically is in the box.
0.86"22 mmcompact IR sensor
5/8"16 mmmax glass or acrylic
IP65waterproof plugs
24 monthUSA warranty
Always improving
Refined where it counts
We keep improving our products even after release, so the current version of the ATO includes refinements you won't find in earlier units. The pump and power supply have proven to be extremely reliable, and these updates build on that.
Longer pump cable
Extra cable length gives you more freedom to place the pump where it works best.
Larger pump motor
A slightly larger motor further improves motor lifespan and reliability.
In the box
Everything to get running
- ATO pumpWith dry run protection
- IR water level sensor0.86" (22 mm) long, magnet mounted
- Magnetic sensor mountFully submersible, glass or acrylic up to 5/8" (16 mm)
- Black tubing6.5 ft (2 m) of 1/4" (6.4 mm) ID vinyl
- Tubing holderFits trims and braces up to 0.6" (15 mm)
- Siphon breakPrevents back-siphoning
- Power supplyWith Y-cable and IP65 plugs
Clean install
Sleek and Subtle
Fully submersible on both sides
Both halves of the magnetic mount are fully submersible, so the outer magnet can sit underwater too. Mount it on a sump baffle or any panel with water on both sides.
Compact IR sensor
The infrared sensor is only 0.86" (22 mm) long, so it's far less noticeable in your tank and adds less water with each top-off.
Strong magnetic mount
Works on glass and acrylic, and holds securely on panels up to 5/8" (16 mm) thick.
Clean, uniform look
All major components are finished in deep black, with black tubing to match, so they blend into most sumps and displays.
Secure tubing holder
Fits tank trims or euro braces up to 0.6" (15 mm) thick and keeps the outlet exactly where you want it.
Reliability
Built to keep running
Proven reliability
The pump and power supply have proven to be extremely reliable, running around the clock in reef systems day after day.
Dry run protection
A conductivity sensor on the pump side detects when your reservoir is empty and shuts the pump off automatically to prevent damage.
Improved sealing
Refined seals on the sensor and magnet housing give better protection and a longer service life than our previous Prism ATO.
Waterproof connections
IP65-rated plugs on both the power supply and pump add an extra layer of safety and durability.
Quieter pump
Runs more quietly than our earlier Prism ATO pump, so you'll barely notice it working.
Installation
Plenty of reach
The pump and power supply each run to a Y-cable, which connects to the sensor. Here's how far each cable goes.
76" (193 cm)total reach from the pump or power supply to the sensor, about 6.3 ft
Siphon break placement: The included siphon break lets air into the line when the pump is off, which stops unwanted siphoning. It can also let out a small amount of water, so always position it inside the rim of your aquarium, sump, or ATO reservoir.
24 month
USA warranty, with extended coverage available
Add 36 or 48 month extended coverage for extra peace of mind. Want an even cleaner install? Our Elite Magnet Mount adds an integrated tubing holder.
