Innovative Aquatics Sentry Dosing Pump

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This item has been discontinued.

Innovative Aquatics

The Sentry is a professional grade two- OR one-channel reef aquarium dosing pump that comes complete with all the equipment you need to automatically nourish, balance and protect the environment of your reef aquarium.

Two separate channels, pH Controller & Float-Switch compatibility. Large RED LED display, internal rechargeable backup battery, compact size, quiet, dependable performance dosing as little as 0.3 ml./hour up to 85 ml./hour when used to dose 2-part calcium/alkalinity additives. Also included is a higher-flow (3–800 ml./hour) one-channel tubing set capable of adding up to 5 gals./day. Can easily be used for either night-time only kalkwasser dosing, 2-component dosing or makeup-water additions.


  • Two-Channel Capability Built In, with digitally adjustable dosing rates from .15 ml. to 85 ml./hour per channel when used with the included 2-channel tubing set.
  • Float Switch Compatibility. A float switch is available as an accessory, and can be plugged into the control jack in the back of the pump. The float switch is connected to transistor-level voltage, providing safety and dependability.
  • High Volume One Channel System. The Sentry is also made to be used as a one-channel makeup water doser. Using the included long-life tubing set, the Sentry will pump up to 800 mL per hour, or up to 5 gallons per day.
  • Controllable—Using the optional A/C control interface, the Sentry can easily be controlled by other devices, such as pH controllers, electronic float switches or aquarium monitoring systems.
  • 24/7 operation—Thanks to the Swiss-made motor and the Sentry is DESIGNED for 24/7 operation 365 days a year.
  • Accuracy and Tubing Life- by utilizing a heavy-duty, Swiss-made motor and precision gear drive system, the Sentry pumps at a constant rotor speed of 12 rpm when set at 300. For slower rates, the timing cycle is changed but the rotor speed remains constant. Since it does not rely on friction to drive the pumping mechanism, the output of the pump will remain stable over very long periods of time, and it’s also non-siphoning. Also, since the rotor moves at such a slow speed, tubing life is significantly better than that of higher-speed, gear-less pumping systems. Typical tubing life is 6 months for a two-channel system.
  • Built-In Battery Backup—The built-in nickel cadmium battery pack will power the pump for over an hour, providing peace of mind during power outages or in moving the equipment. The settings not only stay in memory, but the pump will actually run on the battery for over an hour. When turned off, the memory of the last rate setting remains in the pump electronics for 24 hours, so when turned back on, it rapidly returns to the previous setting.
  • Bright LED Display—Easily visible from a distance or underneath darkened cabinets. Quiet Operation. This pump runs exceptionally quietly, making less noise than most desktop computers.

Product Manuals & Documentation

Innovative Aquatics Sentry Dosing Pump

Owner's Manual available for download in Adobe PDF file format


Manufacturer Warranty: Guaranteed against mechanical or electronic defects for 2 years, both parts and labor. Damage by moisture or customer abuse of the equipment is not covered.



Experience Level: Expert

Accurate and Reliable

Over the last 20 years I've owned many different dosing pumps in all different price ranges. I have gotten rid of them all and now own 4 of these wonderful pumps. These are the only pumps I will use on my 300 gallon reef, as well as the ATO on my 60 gallon cube. The Sentry is a no frills incredibly accurate workhorse. Its a refurbished medical dosing pump. I figure if its good enough for hospital usage, then I can trust it on my reef. NOTE: It is important that you read the instructions carefully, this pump can be very versitle if you know how to use it.

3 out of 3 found this review helpful

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Experience Level: Expert

Needs improvement

I bought this pump to dose small amounts of additives into my reef. Like most advanced aquarists (I hope) the pump was programmed into my controller (Apex) to try and tweak the amounts added. I will say that the pump is easy to set up, consistent in its dosing, and relatively quiet. Two major drawbacks, particularly for this price, is that it cannot be controlled by the Apex (or any other controller) and the battery backup it has. The manufacturer essentially took a hospital IV pump and slapped a sticker on it that reads reefdosingpumps.com. A battery backup is good when grandpa is getting his antibiotics and the power goes out but in reefing if the power goes out you probably do not want additives to continue to be added, may it be because of a power failure or because a controller turned it off. I have a float switch that came with it that was made from the microphone jack used in computers. Despite its positives I have to give this pump a low rating for the little thought the manufacturer gave to reefing in particular- if you cannot control the pump then it should not have a battery backup. After a power failure you need confirmation that the system is OK and not to be "reliably" dosing additives.

1 out of 6 found this review helpful

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flricordia from MILTON, FL UNITED STATES


Experience Level: Expert


I have a Sentry but want to give a warning I think all should be aware of. If you are dosing something, kalkwasser or whatever, and it is dosed with a controller, if you loose power the controller will no longer be able to direct the sentry doser which will operate by the battery back-up and continue to dose. Keep this in mind. Nice system but can overdose your tank if you loose power and am away.

1 out of 4 found this review helpful

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Experience Level: Expert

great pump

I use it to dose 2-part in my 120 gallon reef. Perfect for this application.

9 out of 9 found this review helpful

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Experience Level: Intermediate

Reef Dosing

This a is a very easy pump to setup. The pump is super quite and is perfect for the to part dosing that I am doing on my reef tank. The Pump was missing the light sensor and I called Innovative aquatics and Stan is shipping me the part right away. So very good customer service.

6 out of 6 found this review helpful

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