- ATK V2 Auto Top Off Kit - Neptune Systems
A Complete, Simple, & Standalone ATO!
If you want a safe ATO system, the Neptune System ATK v2 uses a mixture of optical eyes and a float valve to ensure your tanks water level stays the same while preventing overfills. With the ATK v2 you do not need an Apex Controller since it can be run 100% standalone, however with the addition of an Apex Controller additional features can be unlocked and more accessories can be added to the included FMM module.
- 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
The ATK (Automatic Top-off Kit) is a simple, standalone, and complete solution for replacing water lost to evaporation.
The new aquarium hobbyist has many challenges, but none is more annoying than the chore of adding water, every day, to make up for that lost to evaporation (a.k.a. topping off/up). This alone usually makes the automatic top-off (ATO) device the first piece of automation equipment purchased.
The ironic flip side of this decision is that a faulty ATO device is one of the leading reasons for catastrophic aquarium failure, or even worse, flooding of the house or business.
Not all ATO devices are created equal. Sadly, many ATO on the market are made with cheap components, have very little protection against these catastrophes, and are just a nightmare to assemble and install correctly.
An ATO does not have to be both a blessing and a curse!
Neptune Systems designed our ATK – Automatic Top-Off Kit to not only be super-simple to install and use, but it is unique in the market as an ATO device with three layers of redundant monitoring and water-level control. The ATK does the work for you, while at the same time protecting your tank and your home.
Safer Than You Can See
The Neptune Systems ATK v2 uses the robust Fluid Metering Module with re-designed optical sensors to monitor your water level. The dual sensor design allows for the ATK to have one main water level sensor and the other as a backup should the first ever get dirty. On top of the optical sensors, a mechanical float valve is integrated into the pre-assembled water level mechanism that will protect you against the super rare electronics failure. On-top of all that, IQ-Fill technology will learn and limit the run-time limits for your aquarium system, ensuring that if all else fails, the PMUPv2 never runs long enough to overfill your aquarium.
Two Accessory Ports Let You Expand Your ATK
The FMM module included with the ATK has four ports for sensors and probes. The two installed optical sensors for the ATK only use port-1 and port-2. This means there are two free ports that can be used for these optional purposes.
Optical Sensors with Magnetic Mounts
Whether for your ATO reservoir, to use as a sump-high alert, or for your long term water storage such as a brute container, these optical sensors plugin into the FMM. In standalone use when used in your ATO reservoir (plugged into port-4), the FMM will stop your PMUP and sound an alarm when the sensor is above the water level. If you plug it into port-3, and mount it high in your sump, if your water level ever goes that high, an alarm will sound and your PMUP will stop operating.
Optional leak detection probes.
Insert one of our leak detection probes into port-3 on the FMM and then place it near your sump. Now, if for some reason your sump should ever overflow, your ATK will stop operating and an alarm will sound.
Flow sensors in sizes from 1/4″ to 2″ (Apex-connected mode only)
Optional sensors are available that will monitor the flow through plumbing on your aquarium. This is perfect for monitoring the health of your return pump, keeping an eye on your emergency drain, setting the levels on your various reactors and filters, or watching the flow to your RODI.
1x FMM Fluid Monitoring Module
2x Optical Water Level Sensors
1x Float Valve
1x 90° Tube Fitting
1x 4 Meters Orange RO Tubing
1x 3/8" to 1/4" Push Connect Adapter Fitting
1x 1/4" Push Connect Siphon Break
1x Set Screw for Non-Float Valve Applications
Poor Optical Sensors By Will on 5/20/2020Will wouldn't recommend this product to a friendI would not recommend buying this unit unless you are willing to buy new sensors every six months to a year. Replaced this unit with a Tunze Osmolator and could not be happier.
Horrible PMUP pumps By John on 5/19/2020John wouldn't recommend this product to a friendI love my apex but this Neptune ATK system is one of the worst. After replacing two PMUP pumps I gave up and ordered the Tunze auto top off.
Please do not waste your money on this.
Best option for a system running an APEX By Rockstar on 4/1/2020Rockstar would recommend this product to a friendFirst and foremost, I have not ran one of these without an APEX, and I can't see why you would. You're loosing multiple control functions without an APEX, and you would be better off with another system like the TUNZE osmolator, JBJ, or Autoaqua. That being said, If you are in the market for an ATO in this price range and you don't have an APEX already... you might want to rethink some of your priorities. If you already have an apex, you are really doing yourself a disservice to go with anything else.
Most negative reviews seem to be user error, specifically issues with programming. Setting it up with Neptunes "tasks" is a breeze, but I would encourage people to dive in a bit more and understand some of the programming in APEX to utilize with your specific setup.
I have ATK's on multiple different systems that I maintain. Some running with a reservoir and the PMUP, and others where I have tied it straight into an RO/DI supply line and incorporated Neptune's Solenoid Valve (SV-1). I have yet to have any failures.
With the ATK having 3 different hardware fail safes (two optical sensors, and a physical float valve), as well as being able to program in software fail safes (max/minimum run times, and alarms), its really hard for me to imagine that if you set it up and program it correctly you will have any issues.
And to top it all off, the FMM that comes with this has two extra ports for sensors, so you can add even more sensors, be it for fail safes, alarms, or even just an alert for when your ATO reservoir, or sump return pump area is running low.
One should always still incorporate good practices, such as appropriately sized sumps, and a balanced system so one does not have more water in their ATO reservoir than their sump can handle. If you are going to set it up to a solenoid and water source, then you better for sure have surface sensors and a floor drain under the tank.
While this might not be for everyone's system, it seems like the best option for a sump based system that is already running an APEX.
Unreliable By Jim on 2/26/2020Jim wouldn't recommend this product to a friendThis product is unreliable. Several times I have noticed my sump water level low. The sensors are working, but for some reason the ATK decides not to run. It has a built in algorithm where it "learns" how much water you tank should need per day. I wish there was a way to turn that feature off. I have already replaced one of my ATK's with an osmolator and I will be replacing the other soon.
Optical Sensor Leaked After 1 Year By Jarrod on 2/19/2020Jarrod wouldn't recommend this product to a friendOverall I liked the ATK. I love how it integrates with the APEX and it performed really well for about a year (as long as your clean the sensors). The optical sensors will get dirty and need to be wiped off every month or two or they will show closed and your ATO will fail in the off position, an easy part of routine maintenance. However, this past weekend I got a salinity alarm from my Apex Sunday night. I came in on Monday morning (the tank is in my office) and the return pump chamber was dry and the ATO reservoir was full. Luckily my two Various pumps handled running dry like champs (I did not have the float switches connected). At first I thought the sensor was dirty, however, upon inspection the optical sensor developed a leak and water was inside of the sensor so it showed closed in the apex. If you can't trust the sensors for your ATO then what good is it?
Great Convenience / Awesome Customer Service By JAN on 2/13/2020JAN would recommend this product to a friendI have a Neptune ATK purchased through BRS and installed by an independent service provider a few months ago. I had issues with repeated alarm, and never got through one 24-hour period without one type alarm or another. While this sounds like the beginning of a terrible review, it is anything but - Jon and Morgan at Neptune's Customer Service center were incredibly helpful with multiple phone calls and emails to get to a diagnosis of the problem (the PMUP was intermittently faulty). As you can imagine, any intermittent issue is difficult to diagnose but Jon and Morgan stuck with it and patiently solved the problem.
And now I LOVE my Neptune ATK - it keeps the water level in my tank sump absolutely constant with no fuss. I recommend Neptune Systems with no reservation!
Not useful as a stand alone unit By bart on 1/28/2020bart wouldn't recommend this product to a friendNeptune products look like a real great way to run a reef tank, and I have seen plenty of people with outstanding results.I was wanting to automate my rig so I figured I would start with the ATO and build from there.
My unit worked fine until I turned off my skimmer.After turning on skimmer, it has no idea what to do.I called BRS and was told it is not designed to handle these functions unless connected to apex and we cannot accept returns of used items.
Well,ok it was billed as a stand alone ato.
Maybe something is wrong with it, send it in.They opened a ticket with neptune and i repeatedly explained the problem via email.
A month later I receive my ato back with no explanation and at this point I'm done.I packed it up and its in a drawer.
Back to my JBJ og top off thats been running for eight years.
Overall good, but had one flaw Update By Scott on 1/28/2020Scott would recommend this product to a friendI reviewed this product back in July of 2019. I think some of the bad reviews on this product are because people are not keeping the sensors clean. I had that issue myself. A word of advice also, if you are going to use Kalk in your ATK, disconnect the hose from the senor/float valve unit. It clogs FAST. The Kalk also leaves precipitant all over the sensors which made the top off basically stop working altogether. What I ended up doing was disconnecting the hose from the sensor/float vale unit and put in right next to the return pump. Now the sensors stay clean, and I am topping of Kalk water flawlessly.
Broken out of the box! By Mike on 1/26/2020Mike wouldn't recommend this product to a friend2 of the main 3 components came broken out of the box when I purchased this unit brand new. After waiting close to a month to get the replacement parts one at a time shipped ground across the country, the unit worked for a couple of weeks. Then nothing. Customer support is a sick joke. I basically gave up after they requested a video of the unit! What the hell is that gonna show?! I ended up throwing the unit in the trash and eating the money I spent on it. For future reference, marine depot does not let you leave a negative review on this product.....that’s bullshit! That practice has caused them to lose me as a customer. Thank you BRS for letting reefers say what they need to say about a product! If a manufacturer wants to sell garbage, they should lose customers for it.
Had mine for 2 years now By Scott on 1/18/2020Scott would recommend this product to a friendIt’s been low maintenance and reliable on my Nano tank going on 26 months now. No issues.
So far so good. By Luke on 12/28/2019Luke would recommend this product to a friendI've had one on my 300 gallon for a few months and its been fine. No complaints. Works as advertised.
Working good - did have a bad pump By JP on 12/4/2019JP would recommend this product to a friendI have two of these v2 ATKs now. I had one with a bad pump out of the box, the pump would run for 1/2 sec then stop. Contacted Neptune support and they shipped me a replacement the next day. No issues so far.
Was really plug/play with my Apex.
I got a 2nd ATK v2, as my RO/DI water is in a remote location (basement) with a 16' rise. I got a 2nd unit as needed the FMM module for the remote tanks and to plug in power for the pump. I've also repurposed the sensors from the 2nd kit on my ATO/AWC tanks. I needed one FMM module up with the sump and another remote. It was cheaper to buy two kits, and as a bonus I got a spare pump for future use.
Could a solenoid be hooked to this system instead of the pump and then be plumbed direct to ro/DI system?
In theory it would work, just pair the FMM with the solenoid instead of the pump. We do not at all recommend this because you will have it hooked to a endless supply of water and if the solenoid or sensors fail that would be bad news.