SKU: 6651205002

Neptune Automatic Top-Off Kit (V2)

Sale price$2557.35 Regular price$2841.50
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Ships within 48 hours · Estimated delivery Aug 14 - Aug 19

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Description

Neptune Automatic Top-Off Kit (V2)Neptune Automatic Top Off Kit (V2) Neptune Automatic Top Off Kit (V2) is used to automatically replenish evaporated water in aquariums, providing a simple and reliable solution for maintaining water levels. A Complete, Simple, & Standalone ATO! Plug & Play Operation Includes Powerful 24V DC PMUP Two Optical Sensors with No Moving Parts IQ Fill Water Run Time Intelligence Mechanical Float Valve Audible Alarms No Apex Necessary Advanced Featured

Neptune Automatic Top-Off Kit (V2)

Neptune Automatic Top-Off Kit (V2) is used to automatically replenish evaporated water in aquariums, providing a simple and reliable solution for maintaining water levels.

A Complete, Simple, & Standalone ATO!

  • Plug & Play Operation
  • Includes Powerful 24V DC PMUP  
  • Two Optical Sensors with No Moving Parts
  • IQ-Fill Water Run-Time Intelligence
  • Mechanical Float Valve
  • Audible Alarms
  • No Apex Necessary
  • Advanced Featured Unlocked When Paired With Apex Controllers

No aquarium task is more tedious than adding freshwater to replace the water that evaporates out of our aquariums each day. Because of this, it's no surprise that an auto top off system (ATO) is usually the first piece of automation equipment purchased by new hobbyists. Having an ATO is particularly useful when you're away on vacation and don't have someone to watch over your aquarium or simply want to go a few days without having to think about your tank.

The ATK Auto Top Off Kit from Neptune Systems is simple to install, works with or without an Apex Controller, and has multiple back-up safety measures to prevent overfilling.

Three Levels of Safety

Backup Optical Sensor: If the primary water level sensor fails, a backup optical sensor will stop the ATO pump and an alarm will sound.
IQ-Fill (stand-alone mode only): The ATK will not add more than double the learned water amount. If the system is running for too long, it will stop the ATO pump and an alarm will sound.
Physical Float Valve: In the rare event that the electronic failsafes do not work, a mechanical float valve will stop water from flowing into your aquarium.

PMUP v2 ATO Pump

The PMUP is a small utility pump that is perfect for moving water from your RODI reservoir to the aquarium or sump. This pump has a vertical design that easily drops into most water jugs or ATO reservoirs and can pump water over 14 feet vertically, allowing for efficient water delivery from remote or lower-floor reservoirs.

The bottom of the pump features a removable screen for easy access to the pump's impeller. This design keeps potential debris out of the pump while also allowing easy access for cleaning. 

Extra Value for Apex Owners

If you already have an Apex, setting up the ATK is still super-simple. Just plug in all the components, attach it to your Apex via the AquaBus cable, and run the set-up task in Apex Fusion. With the ATK connected to an Apex, you get the added benefit of having email and push notifications if something goes wrong and you can integrate the ATK into other functions.

The FMM module included with the ATK has four ports for sensors and probes. The two optical sensors included with the ATK only use port-1 and port-2, which means there are two free ports that can be used for additional accessories like leak detectors, flow sensors, and additional optical sensors.

What's Included?

FMM Fluid Monitoring Module
(2x) Optical Water Level Sensors
Float Valve
90° Tube Fitting
PMUPv2 ATO Pump
4 Meters Orange RO Tubing
3/8" to 1/4" Push Connect Adapter Fitting
1/4" Push Connect Siphon Break
Set Screw for Non-Float Valve Applications
24V 36W Power Supply

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 6651205002

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4.8 ★★★★★
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Kari
Alexandria, US
★★★★★ 5
Fit ✅ Color ✅ Soft ✅
Color: 09 - Brown, Size: King, Color: 09 - Brown, Size: King
Color is exactly as advertised. Feels very soft, fits perfectly. No weird odor and not too warm 🥵. Only downfall I can tell is it seems a bit thin.
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Reviewed in the United States on June 7, 2026
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michele schmitz
Boise, US
★★★★★ 3
Very thin. You get what you pay for.
Color: 01 - White, Size: Queen
You get what you pay for. I first noticed the softness which was great. The quality is very thin. They are cool which is great. I have not washed them yet. I would suggest washing them on cool and gentle by themselves. And because they are so thin I would fluff dry for an hour if you have that setting. The two things that damages clothes and sheets, etc. are if you have an agitator in your washer, those ruin clothes and the heat you choose for the fabric you’re drying I always wash my clothes on cold. I do not have an agitator anymore and on delicate and thin fabrics, I use fluff dry. It is cool, but it will dry, especially if it is thin and I’ve had to dry my fine delicates a little bit longer on fluff that way they don’t shrink because the shrinking comes in from the heat from the dryer so keep that in mind another good thing to remember if you got white sheets like I did is that when you use your detergent add a little bit of borax or laundry booster and they will help get them clean and sparkly white. I am on the fence about whether I would recommend this or not if you’re tight on money and you take good care of them I would recommend that you get them. I’m a linen freak and I buy mostly expensive sheets and I thought I would try this out so that’s where I’m at.
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Reviewed in the United States on May 26, 2026
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Verified Purchase
Sarah
Phoenix, US
★★★★★ 5
Soft, Complete Set & Great Value
Color: 01 - Grey, Size: California King, Color: 01 - Grey, Size: California King
I’m really impressed with this comforter set! The material is super soft and comfortable, and it feels great for all seasons, not too heavy but still cozy. I love that it comes with everything you need, which makes it a great value for the price. The gray color is exactly as pictured and gives a clean, modern look to the room. After washing, it held up well with no issues. Overall, a great quality set that I would definitely recommend!
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Reviewed in the United States on May 12, 2026
T
Verified Purchase
True Reviews By Red
Carnegie, US
★★★★★ 5
Holds up beautifully—even after lots of washes
Color: 02 - Olive Green, Size: Queen, Color: 02 - Olive Green, Size: Queen
This is a beautiful bed set and has held up incredibly well over time. I’ve washed it dozens of times now and figured it was finally time to write a review because it still looks and feels great. No issues with quality, stitching, or softness—it’s held up flawlessly. The material is soft, warm, and comfortable, and it really pulls the whole look together in our camper bedroom. Definitely one of those sets that looks good and lasts.
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Reviewed in the United States on April 27, 2026
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Brunettevirgo
Dallas, US
★★★★★ 5
So comfortable and awesome price.
Color: 01 - Grey, Size: Queen, Color: 01 - Grey, Size: Queen
I really like this bed set. The comforter is soft to touch and is comfortable. It’s weird and funny to say, but my cat really loves it too. The quality is very good! I got it on sale for $30.00… a set that comes with a comforter, fitted sheet, top sheet, 2 regular pillow cases and 2 decorative pillow cases is a win for me. It arrived on time, and came packaged really well. The picture below is showing of how they came in a box from bedsure, the sheets/ pillow cases and comforter come separated in different clear vacuum sealed bags. There are directions on how to open the sealed bags, but I just cut the top of both bags open at the top, and you hear a “pooof” noise, the blanket raised up. I let it air out for a few hours and then put it on my bed and it looked amazing.
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Reviewed in the United States on May 16, 2026

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