BRS Drew's Doser Peristaltic Dosing Pump

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  • BRS Drew's Doser Peristalic Dosing Pump

BRS Drew's Doser Peristaltic Dosing Pump

97% Recommend this to a friend (28 of 29)

SKU: 202306

reg. $99.99

Special Price: $84.99

In Stock: 20
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Quick Overview

Drew's Dosers feature a low flow rate of about 1.6mL per minute that makes them perfect for dosing 2 Part. Two Drew's Dosers are needed to dose 2 Part. These are the pumps that we use on our own systems.

  • Will not back siphon
  • Super quiet
  • 1 Year Bulk Reef Supply warranty
  • Includes 10ft of tubing, directions and 100mL measuring cup for calibrating


Full Details

The flow rate of a Drew's Doser is intentionally 1.6mL per minute which makes it too slow for most auto top off needs. With the addition of an inexpensive digital timer Drew's Dosers will provide a fully automated calcium and alkalinity dosing solution. Two Drew's Dosers are necessary to dose 2 Part. The tubing set typically lasts 1-2 years depending on amount of use. Each Drew's Doser includes 10ft of tubing. Please note that the flow rate of each pump will vary slightly and should be tested before use to determine the exact flow rate. offers a full 1 year replacement warranty on all Drew's Dosers.

We do not suggest using this pump for auto top off systems.


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  • Reliable and Long Life By Matthew on 11/9/2017

    I bought two of these in 2012 and have been running them to dose Cal/Alk ever since. Other than one of of the units dosing 1ml slower, than when first purchased, they are both rock solid performers. No back siphoning, easy to replace high quality tubing and dead silent. Will purchase two more of the same, when they finally kick the can.
  • Great pump By CJD on 2/22/2017

    I have 2 of these dosing CAL and ALK . Very quiet and perform perfect.
  • Precise and Quiet! By Damian on 1/14/2017

    I am using this dosing pump to dose NO3-PO4X once a day. When I set up the pump, I ran it for ten minutes as instructed and it gave me precisely 16mL. The pump is mounted inside my cabinet and is practically silent. All I had to do was hook it up to my Apex outlet (low voltage relay) and tell it how long to run it to get the desired dose I wanted (yeah, a little basic math!). I am very satisfied with this product!
  • Great pumps - don't forget to measure output By Joseph B on 8/17/2015

    I bought two these pumps to add macro and micro nutrients to my freshwater planted amazon bio-type system consisting of 200 gallons. I bought these pumps on the recommendation of another freshwater aquarist and was hoping they would deliver a bit more than the BRS two roller pumps. I did not expect them to be spot on at 1.6 ml/min but was a bit disappointed that one is 1.3 and the other is 1.2 ml/min. Great pumps I just have adjust running time and concentration to do what I need to do.
  • Dosing made easy By hans on 10/17/2013

    I have 2 of these for calcium and alk. I have them hooked up to my Apex controller and it makes dosing easy. Much more consistent way of dosing compared to hand dosing. Set and forget. Make sure to check Ml per minute, mine were a little under what it was rated. Other than that no complaints here
  • Doser and levels are in check for last 6 months. By SloppyWhenWet on 10/9/2013

    I use two drew dosers to maintain my levels with 2 part. Working well and only time will tell but so far so good.
  • glad I bought them ! By maria on 6/13/2013

    Bought two of these and so happy I did. No guessing pretty much just set
    and forget. Adjustments will need to be made over time as corals continue to grow and demand increases, but what a pleasure to know the tank is being dosed the exact amount everyday !! Sorry I waited so long !!
  • Best Dosing Pump I Have By Peter on 5/6/2013

    I would highly recommend the Drew's dosing pump. The tubes are better with the BRS dosing pump which I have two of, but this is a much better pump in my opinion. I use this for the calcium portion of my dosing. If I was doing it over I would buy this pump for all of my dosing pumps.
  • Great Pumps By Terry on 2/23/2013

    At first I wasn't going to spend the extra for these pumps but now that they are up and running, I'm glad that I did. Great pumps. Spend a little more for these pumps and don't worry about if you made the right decision or not.
  • Short cords By MAtt on 6/2/2012

    The cords could be a bit longer. Its much better to wire tie than to try to stretch a cord! Otherwise they seem ok, but too new to tell.
  • Excellent product By James on 3/14/2012

    I've used the Drew's Doser for over 2 years. I use it to dose Soda Ash daily in my 120g sps dominated reef display tank. It's been very reliable and is easy to operate.
  • just installed great doser By reefez on 3/11/2012

    I just installed two of these dosers very easy to do W/reefkeeper lite only down side for me is that both dosers had different out puts .So a little timer management and I am good to go. Very happy with my choice so far.


Ask a question

Product Questions

Hello. I want to know if I can use this pump to dose kalkwasser? I have a 18x18x18 rimless cube. Thanks.
Question by: EDWIN on Sep 30, 2013 3:27:00 PM
Hi Edwin,
This pump wouldn't be a very good choice for kalk as it isn't meant to run for that long. For kalk you would want to look at something like the 50mL doser which is faster and wouldn't need to run as long.
Answer by: Bulk Reef Supply on Sep 30, 2013 3:27:00 PM
what timer works best with it ??
Question by: fred on May 7, 2015 6:55:00 PM
Great question, One basic timer we would recommend is the EcoPlus Dual Digital Timer
it is able to handle up to 2 pumps and has independently controlled outlets.
Answer by: Bulk Reef Supply on May 8, 2015 10:01:00 AM
Does the doser need to sit above the dosing container? Will placing it at the same level or lower create a syphon? Thanks!
Question by: Damian Pisapia on Jan 7, 2017 6:51:00 PM
Great question! You can place these peristaltic dosing pumps anywhere, in relation to the dosing container, and there is no worry of creating a siphon! The peristaltic dosing pump head pinches the dosing tube inside so there is no chance of a free flow siphon.

Long story short, yes you can place it below the dosing container. :-)
Answer by: Randy (Admin) on Jan 10, 2017 2:47:00 PM
Can the flow rate go down to 0.2mL/min?
Question by: Ling on Sep 24, 2013 11:01:00 AM
Hi there,
The actual flow rate on the pump is not adjustable. It will always flow at 1.5mL per minute that it is running. You control how much solution you are dosing by adjusting your timer and thus how long the pump itself runs for. If you want 15mL, you would run it for 10 minutes. If you wanted .75mL you would run it for a half a minute.
Answer by: Bulk Reef Supply on Sep 24, 2013 11:01:00 AM
I have the inline going clockwise as it made since that it would circle through then dose the tank-is that correct? I feel stupid but not sure. :)
Question by: Claralice on Jun 14, 2014 1:36:00 PM
Hey Claralice,
That is correct, it should go in the tube on the left and out the tube on the right (assuming the tubes are pointing towards you).
Answer by: Bulk Reef Supply on Jun 14, 2014 1:36:00 PM