DOS – Dosing and Fluid Metering System
The Neptune DOS Fluid Metering System is one of the smartest dosing pumps on the market. It will hook directly to your existing Neptune Apex, ApexEL or Apex Jr. giving you the ability to program both pumps independently for what ever kind of dosing your tank may need. The DOS pump includes two pump heads for the most common of two-part dosing, but it is not limited to just two part dosing. You can use it for automatic water changes once a week or even once a day, minor trace element additive dosing, liquid food dosing, or pretty much any other liquid your tank may need to be dosed in metered amounts.
You simply just hook the DOS Fluid Metering system to your Apex controller with the included AquaHub cable and with the Fusion cloud software programming a dosing pump has never been so simple. The DOS system when interfaced through fusion can be programmed to dose a certain amount of liquid between certain intervals of the day. The DOS pump is so smart it will even change the speed of the motor depending on the amount needed to be delivered to the tank to keep noise at a minimum.
- 2 part dosing
- Liquid food dosing
- Additive delivery
- Micro-quantity dosing
- Auto water changes
Simply hook this system up to any Apex via an Aquabus cable to begin DOS-ing today!
The #1 reason people purchase a dosing system for their aquariums is for consistent and easy dosing of 2-part solutions (calcium and alkalinity) to their reef tanks. The most common method for doing this today is to use standalone dosing pumps and run them on a timer using seconds or minutes to determine how much to dose. This is not only confusing, but also prone to inaccuracy. Everyone knows that when measuring a fluid it is done by volume, not time. Every dosing calculators out there uses volume. So, with the DOS (and the Apex Fusion interface) you simply enter the amount you want of each part of the additives (one on each pump) and what hours of the day you want it delivered. The DOS then sets up all the dosing intervals within that time period. When that time interval is finished, the exact volume you set has been delivered. It even automatically chooses the slowest speed necessary for the pump so that it minimizes noise.
- Automated water changes - Water changes with the DOS are super easy. All you do is place your empty vessel and your fresh stock of saltwater under your stand. Then, with the Apex Fusion wizard just tell it an amount of water you want to change over what length of time and the hours of the day you want it to happen and it figures it all out for you. It will perform an automatic, continuous water change for you. It gets better. If you have our dual optical water sensing accessory Apex Fusion will send you an email or text message letting you know it is time to change out the jugs. Less time pumping, siphoning, and sloshing water and more time enjoying a great aquarium.
- Dosing micro amounts - If you need to dose tiny amounts of a particular solution, element or other fluid (like vodka dosing or Zeovit systems), the DOS is the perfect solution due to its precision controlled stepper motor. This ability to control pump movement in such a refined manner means that you can dose all the way down to 0.1ml at a time!
- Large diameter tubing - Larger size tubing means that your pump does not have to work nearly as hard – or stay on for longer cycles. The most popular dosing pumps on the market use tube fittings with the tiny diameter of 1.67mm. The DOS uses much larger tubing and fittings. In fact, at 3.33mm in diameter, the pump on the DOS can handle 4x the flow of the most common pump style on the market. This means that your pump (and motor) will run 1/4 the time to pump the same amount of fluid. Less run time means long pump life.
- Headache free interface - Programmability using Apex Fusion makes dosing a breeze.
- Quick and easy tubing changes - No matter the pump, your tubeset will eventually go bad. Changing out the peristaltic pump tubing on the DOS is a snap. Literally! All you need to do to change out the pump tubing is squeeze the pump head and remove. Then take out the tubing, replace with a new one, and snap it back on. No screws, no impossible snap on covers and no fussy loose rollers to mess with. And, because you are not changing out an entire pump head, your costs are lower as well!
- Adaptability - The DOS has an accessory port that will enable it to be connected to the DDR – Dual DOS Reservoir.
- Super silent operation - The Neptune Systems engineering team has taken extensive steps both in how the pump operates as well as the enclosure design to ensure that the DOS system is one of the quietest dosing systems on the market for the fluid volumes it delivers
WHAT'S IN THE BOX
- DOS pump
- Aquabus cable
- Power supply
- 4 meters DOS tubing
SPECIFICATIONS
- Size (Approx.): 9.5″ x 5″ x 5″
- Weight (Approx.): 4 pounds
- Lift Height: 24 feet (minimum at MSL)
- Suction Height: 24 feet
- Flow Rate: Variable (0.1mL – 250mL/min)
- Power Requirement: 110/120V or 220/24oV
- Requires: Apex, ApexEL, Apex Lite, or Apex Jr.
Instructions:
Neptune DOS Instructions-
Poorly made By Shirley on 7/2/2020
Shirley wouldn't recommend this product to a friendI have everything Apex. I love my Apex. Everything else Neptune makes is sub par. Very cheaply made. I have opened many of the items, as I have spare DOS, Cor20s, ATK parts from the many failed items I have. The lastest DOS I purchased to replace a DOS that failed because I dripped some water on it (a little extra effort would have been nice in construction to prevent water damage, as these are obviously used around water)_failed out of the box. I now have 2 broken DOS, one working while I wait for them to be repaired. Good thing is when (not if) the next DOS failure occurs I have plenty of backups. I have a shelf of Neptune spares now for when they fail, COR20s, DOS, ATK optical sensors (which they acknowledge they failed on when I had this discussion at MACNA with one of the guys in their booth), PMUP. I would have a Trident backup too if I could get one, less than a year in that has failed too. I wish now that I had never "upgraded" all my parts to Neptune products. -
Terrible product engineering By Nick on 4/17/2020
Nick wouldn't recommend this product to a friendEvery single day is a missed dose because of air in the lines. I bought two of these pumps for the Triton method and apex integration. These things are worthless if they can't do what i bought them for. $600 paper weight. Don't waste your money on these. Either A) buy another doser, or B) dose by hand everyday. -
DOS AWC By VegetaD on 3/4/2020
VegetaD wouldn't recommend this product to a friendI was using the dos for AWC on a Red Sea reefer for 9 months and wanted to post a caution to others. I used a 55g NSW holding tank and had the drain line plumbed to a utility sink. My ATO was also supplied from a 55g tank holding RODI water. My dos had two issues, first air leak from the heads and the old saltwater line was clogged so old water was not being removed at the same rate as new. Additionally, the air leak prevented the new saltwater from being added at the removal rate. Mt ATO functioned normally which led to salinity drop. Fish were fine but corals suffered. Would recommend checking your lines monthly -
Nice but stupid loud! By Liberty Reefing on 1/27/2020
Liberty Reefing would recommend this product to a friendI think the DOS is a great product. It works well and is easy enough to calibrate, setup, use. It is WAY to loud! I sure hope the next version can compete with others coming to market. Apex control isn't just a free pass for sub par. -
Good... but had trouble with graduated cylinder calibrating By A.J. on 12/26/2019
A.J. would recommend this product to a friendJust installed the pump and now that I got it calibrated I am happy with it. We will see how it does long term for two part. My biggest problem and almost returned was I used their graduated cylinder to calibrate and when I would test 10mls into that same cylinder I would get 12 mls. Turns out after messing with this thing for a couple hours and almost returning the first 5mls at the bottom actually only held 3mls. So the graduated cylinder was trash. Used a nice glass one and worked perfectly. Always check the amount getting dosed after calibrating the pumps. This could have been bad if I had just calibrated and started dosing without confirming the amount dosed first. -
Awesome, but seriously lousy! By Dillon on 8/17/2019
Dillon would recommend this product to a friendTo be honest, I just figured everyone that complained about this being loud were just whining idiots. I mean really, how loud could a little dosing pump be? I live relatively close to an Air Force base, sometimes I can’t tell if an F35 is coming in hot or if it’s just my dos! I’m exaggerating, but believe everyone.....they are loud! I apologize to everyone who reviewed this as loud, as in my head I was thinking...what a bunch of wussies! Sorry
They do work great though. My 2-part isn’t as loud since it’s just a small dose. The awc sounds like a turbo whine from a ‘72 Mack truck. Neptune needs to work on that. A 4 head unit would be a nice addition to the lineup. -
LOUD AF By Paul on 7/3/2019
Paul would recommend this product to a friendThe unit performs well. You are purchasing to perform a function and it does perform. I have it performing AWC's only. How it performs that function is a bone of contention. For the price, you would expect a product that is reasonably quiet. By far the loudest thing on my tank by tenfold or more and this is no exaggeration. This would be utterly useless if you have a tank anywhere remotely close to sleeping spaces. It can only be used at night after you go to bed and only if your bedrooms are at the opposite end of the house, 1 story up at a minimum, and have a mini-split ductless AC unit or similar running in your bedroom to counter the noise produced by this unit. Completely unacceptable othewise. So, for me, it works. Others might not be so lucky. It truly is astonishing how loud this unit is. -
Auto water changes on my nano By Brettward on 3/20/2019
Brettward would recommend this product to a friendI use my APEX DOS to do daily water changes of 0.5 gallons on my nano. The water stability in my tank is perfect, my corals are thriving, I couldn't be happier. I'd probably be lost living in Manhattan without automation like APEX provides. Oh, and it's cool looking. -
Changed My Life! By Derik on 1/4/2019
Derik would recommend this product to a friendI'm using this for the auto-water change feature and I couldn't be happier. Pulling 2 gallons a day every night between 2am-5am on my 180 mixed reef. No more parameter swings from massive 30G changes that only happened *IF* it fit my schedule. I mixed up a bunch of fresh saltwater in a large trash can I got at a big box store and keep it in the garage. Every night I refill my ATO reservoir with water from the garage (wish I could automate that part). If I had easy access to a waste drain (sadly I don't) I wouldn't have to dump out a half full 5G bucket of waste.
Like everyone else has said, this is LOUD but, I'm running it at night so I never hear it. The "flexible" tube that comes with it is garbage and is a disappointment to the quality I have come to expect from Neptune Systems. I went to my local HD store and bought 30 feet of 1/4" refrigerator tubing.
Super easy to setup using the "task" icon in Fusion, just make sure to actually read the pump in/out in the diagram - for auto-water change the output pump is reversed from how it is actually labeled on the pump and that is CLEARLY stated in the task setup. -
Good but loud By Mtbrider85 on 11/4/2018
Mtbrider85 would recommend this product to a friendThe Landing gear on a Boeing 747 getting deployed is quieter than this pump(for real). Ultimately I really like the intergration with the Apex but feel this unit could be improved a lot. We will see how it holds up long term. -
Cost vs Value not a good buy By David S on 9/24/2018
David S wouldn't recommend this product to a friendPro's: (1) Integrates into Apex, which that in itself is the biggest selling point. (2) Both pumps can run at the same time, where as others mentioned at the end, each pump can run one at a time.
Cons. (A) Loud, vibrating noise resonates and if inside stand, you will definitely hear the clicking and operation outside, 10 feet away. (B) I'm using this with the DOS Dual Reservoir, 2 part - and find that it is not keeping calibration, only after a few weeks of use. I could go on about this, but I had to re-calibrate it once, and now will check it in a few weeks. (C) I don't know why, but I keep seeing air in the lines. Now I've used many dosing pumps, and once you get the air out, it stays out. I am noticing from time to time, air in the line. I've checked and rechecked the line, and fitting connections. Just finding this isn't as set and forget as most other equipment is.
Been in the hobby nearly 10yrs, and used Aqua Medic, Jebao, and liter meter III. All performed better in my opinion. -
Stopped working after a couple months of light service By Patrick on 8/18/2018
Patrick wouldn't recommend this product to a friendI used this for a couple months as a 2 part doser and it worked great. Recently changed it to an auto doser and now it has failed and won't pump water. It seems like the heads are slipping. Neptune wants me to send this is for diagnostics and I'm arguing with them about that as I just want a replacement rather than wait however long for them to tell me it's busted. (bonus round that the other DOS I purchased came in busted from the factory with a smashed manual operation button)
In the video, it states that the rollers are only good for 600-700 hours. How much are the replacements and where can I buy them?
Question posted on Mar 29, 2016 2:55:00 PM
Great question!
We are not aware of the rollers available for sale from retailers at this point. For replacement rollers you will want to contact Neptune Systems directly. Feel free to let us know if you have any further questions!
Neptune Systems (Apex Controller) – 408-779-4090 support@neptunesystems.com
We are not aware of the rollers available for sale from retailers at this point. For replacement rollers you will want to contact Neptune Systems directly. Feel free to let us know if you have any further questions!
Neptune Systems (Apex Controller) – 408-779-4090 support@neptunesystems.com
Answer by: Connor (Admin) on Mar 30, 2016 12:03:00 PM
If I set this up for auto water changes and my tank is on the main level of my house and the salt water barrel is one level down (basement) and over about 20 ft can this pump handle that pull?
Question posted on Jan 27, 2016 8:16:00 PM
Great question!
The DOS has around a 20" head height, this means that you would need to place the pump either a little higher or lower in the line from the storage to the tank. It can work well however. Feel free to let us know if you have any further questions!
The DOS has around a 20" head height, this means that you would need to place the pump either a little higher or lower in the line from the storage to the tank. It can work well however. Feel free to let us know if you have any further questions!
Answer by: Connor (Admin) on Feb 4, 2016 3:24:00 PM
So does this dosing pump have the tubing or not as the gentlemen up top asked before and your answer defers from what your page states.
WHAT'S IN THE BOX
DOS pump
Aquabus cable
Power supply
4 meters DOS tubing
Question posted on Jun 9, 2017 3:15:00 PM
Sorry for any confusion. That question/answer was originally provided when the product was first introduced to the market and was based upon different information. The DOS pump does include tubing with the unit.
Have a great day!
Have a great day!
Answer by: Zack (Admin) on Jun 13, 2017 11:56:00 PM
Can you piggy-back pumps? In other words, can pumps be added to each other? I dose 5 separate additives.
Question posted on Nov 5, 2017 12:35:00 PM
You can run multiple DOS pumps with the Neptune Apex System. If you dose 5 different elements, then you would need 3 pumps, but it is possible.
Answer by: Charlie (Admin) on Nov 26, 2017 7:22:00 AM
Will this work with an Apex Classic Unit?
If so, do I need any special modules or something similar?
Question posted on Dec 9, 2017 5:25:00 PM
Hi there,
Thank you for reaching out.
The DOS pump is an excellent dosing pump and will work great with the Apex classic. It connects with an aquabus cable and does not require additional modules
Have a great day!
Thank you for reaching out.
The DOS pump is an excellent dosing pump and will work great with the Apex classic. It connects with an aquabus cable and does not require additional modules
Have a great day!
Answer by: William Glenn (Admin) on Dec 13, 2017 1:40:00 PM
Does this pump have to be positioned above the fluid source? The pump and A/B solutions would both reside in my stand... The sump is also in the stand. Can I merely put the A/B fluid in the bottom of the stand, as well as the pump right next to it, and then pump directly into the sump?
Question posted on Dec 9, 2017 5:28:00 PM
Hi there,
Thank you for reaching out. the DOS pump does not have to sit above what you are pumping. The pump head is designed to prevent siphoning so you have a wide variety of options on where you place the pump
Please let us know if you have any questions
Thank you for reaching out. the DOS pump does not have to sit above what you are pumping. The pump head is designed to prevent siphoning so you have a wide variety of options on where you place the pump
Please let us know if you have any questions
Answer by: William Glenn (Admin) on Dec 13, 2017 1:48:00 PM
Will this work using the apex controller gold system?
Question posted on Jan 16, 2016 12:56:00 PM
Great question!
This works great with the Apex controller gold! Feel free to let us know if you have any further questions!
This works great with the Apex controller gold! Feel free to let us know if you have any further questions!
Answer by: Connor (Admin) on Jan 26, 2016 5:31:00 PM
Can I put this doser in a refrigerator? It would be to feed liquid food to my aquarium.
Question posted on Jun 6, 2016 2:39:00 PM
Certainly can work in cooler environments. We recommend ensuring you are following a good build thread if dosing refrigerated food. Ensure to use volute to draw food into a cycling pump to ensure no left over food remains in the warm doser tubing.
Answer by: Connor (Admin) on Jun 8, 2016 6:26:00 PM
Do you need an apex system to use this dosing pump?
Question posted on Jan 17, 2018 4:46:00 PM
An Apex controller is required for use with the DOS Fluid Metering System.
Answer by: Charlie (Admin) on Jan 17, 2018 7:26:00 PM
