The Neptune Systems DOS Multi-Purpose Dosing & Fluid Metering System is a multi-purpose dosing and fluid delivery system of uncompromising quality. Use with the Apex, Apex Lite, or Apex Jr. (& Apex Fusion software wizards) for many applications.

• User Manual

2-Part Dosing (Calcium and Alkalinity)
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.

Automatic Water Changes
Everyone hates doing water changes? So they never get done as often as they should. Not only that, water changes are disruptive to the stability of your system since all of that change is happening at once.

With the DOS 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 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.

Micro-Dosing of Elements
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!

Includes:

• DOS pump
• Aquabus cable
• Power supply
• 4 ft 1/4" tubing

Specifications:

• Size (Approx.): 9.5″ x 5″ x 5″
• 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, Apex Lite, or Apex Jr.