MD-70RLT - 1536 GPH - Iwaki Japanese

Iwaki MD-70RLT
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  • Iwaki MD-70RLT
  • Iwaki MD-70RLT
  • Iwaki MD-70RLT

MD-70RLT - 1536 GPH - Iwaki Japanese

100% Recommend this to a friend (8 of 8)

SKU: 300401

reg. $399.99

Special Price: $339.99

In Stock: 14
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Quick Overview

Why does BRS recommend this?

Anytime we need an external pump the Iwaki Japanese motors are our first choice.  There are cheaper options that work just fine, however when it comes to noise the Iwaki Japanese external pumps are class leaders and for any area where noise a concern and space is limited. The Japanese Iwaki pump is the way to go.

  • Japanese Motor

  • Max Flow: 1536 GPH

  • Max Head: 31.8 Ft

  • 1” Inlet(MPT)/ 1” Outlet(MPT)

  • Max Amps: 2.8

  • Motor Output: 1/4 HP

Note: The Iwaki MD pumps' power cords do not come with the plug pre-spliced.


Full Details

External pump from Iwaki, the world leader in small magnetically coupled centrifugal pump technology. Japanese-made motor is designed especially for aquatic applications. Super quiet and energy efficient with less parts.

High quality external pump with years of research and development behind its design. Iwaki pumps offer high pressure rates in a durable, compact pump. Easily tailor pump applications because of the numerous motor/pump configurations. MD stands for Mag-Drive.

MD Series – Japanese Motor

  • Japanese motor is made from cast aluminum with a cast end bell
  • Japanese model uses a custom pump design specifically for aquatic applications
  • Japanese pumps run cooler to the touch and slightly quieter, due to the thicker material

Quick Compare - Iwaki MD Pumps (Japanese Motors)


Power Usage

Maximum Flow

Maximum Head


Iwaki MD-20RT


492 GPH

14.1 ft

Hose 5/8” NPT ¾”

Iwaki MD-20RXT


822 GPH

8.2 ft

Hose 1” NPT 1”

Iwaki MD-30RT


600 GPH

17.7 ft

Hose ¾” NPT ¾”

Iwaki MD-30RXT


1140 GPH

13.5 ft

Hose 1” NPT 1”

Iwaki MD-40RT


822 GPH

21.3 ft

Hose ¾” NPT ¾”

Iwaki MD-40RXT


1344 GPH

15.4 ft

Hose 1” NPT 1”

Iwaki MD-55RLT


1104 GPH

26.9 ft

Hose 1” NPT 1”

Iwaki MD-70RLT


1536 GPH

31.8 ft

Hose 1” NPT 1”

Iwaki MD-100RLT


2136 GPH

39.0 ft

Hose 1” NPT 1”


8 Items

  • it's a bit loud. By Dan on 6/3/2017

    Great pump, but much louder than the Panworld that I replaced. The sound is almost identical to my Tunze ATO so every time I walk into the fish room it sounds like my ATO is running and I freak. I have it running right next to another Panworld and I only hear the Iwaki. If your sump is near a TV I would consider a different pump.
  • Best pump out there! By BGP230 on 1/15/2017

    This pump has been running now for 5 years with no problems what so ever. I've had other brands in the past that where junk. Would not use any other brand but this.
  • Awesome basement return pump By Steve on 12/17/2015

    Quiet, powerful, built like a tank!
  • 25 years and going strong By Dominic on 1/10/2014

    Bought this pump 25 years ago and it's been running constantly ever since except for monthly cleaning of filter. Pumps water from basement to first floor tanks, about 10 foot head. Pumps with same pressure today as it did 25 years ago. Can't ask for more.
  • Great and tons of pressure. By totsandman on 9/22/2013

    I use this pump for my sump that's in the basement.
    It doesn't have any problems pumping it up stairs to the main tank. This pump has so much power that I was able to tap off the return line to run my chiller , carbon reactor and bio pellet as well
    Pus I still had to open the bypass a some .

    Only reason I didn't give it 5 stars is because loud due to the amount of air the fan on the back of the motor draws in . Being downstairs its not a big deal but If you had to put it right under your tank it would drive you crazy .
  • Very powerful, solid pump...a little on the loud side. By Jonathan B. on 6/25/2013

    This pump works great. WAY more power than my sub-pump that I was using. Took a minute to figure out how to purge the pump, but once I got it, we were off to the races! My intake flow cannot keep up with this pump, so I had to valve it down to match the flow rate. But I knew this going into it as I plan on upgrading my tank in the future. My only complaint is the noise. I have this pump near my sump on the other side of my office wall and I can still hear it thru the wall. When you walk in my warehouse, you can definitely hear it, for sure the loudest piece of equipment on my tank. So if your sump is below your tank in a living space, I would recommend a smaller or quieter pump.
  • perfect for me By ReefDVMs on 5/13/2013

    This pump was recommended by BRS for my system and I love this quiet and very powerful pump, I am glad they recommended it and I love the build quality I see on this pump
  • WOW !! By Chris on 11/27/2012

    I was looking at several other pumps prior to this purchase, hands down the best pump made !!! Dont waste your money going cheap on the most important item in your reef Iwaki !


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