Neptune Systems

VDM LED & Pumps Control Module

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The versatile VDM Expansion Module can be used as a LED Dimming module to simulate Sunrise/Sunset, Lunar Cycle, Clouds and Lighting with Apex Ready+ fixtures. Or use the module as a Variable Speed Pump control with Apex Ready pumps such as Tunze Turbelle Stream 6105, 6155 and 6255.

  • Complete control of Apex Ready pumps that use the 0-10V control
  • Complete control of Apex Ready+ LEDs that use the serial interface
  • Adds 4 independent 0-10V variable speed ports to the Apex system
  • Plug and Play - Automatically recognizes when installed into the system
  • 2 AquaBus connectors for flexible expansion via AquaBus
  • Comes with 3 Ft. AquaBus cable
  • Fully upgradeable via future firmware upgrades
  • LED Status indicator
  • Compatible with all Apex Systems
  • NOTE: The VDM does not include any interface cables for your pumps. You must purchase those separately


Apex Ready Products

LEDs (VDM Module Required to Interconnect with Apex System or Apex Lite/Jr)

  • LEDs - BuildMyLED.com Aquarium LEDs
  • Apollo LED - SolarBlast UV 5000

Pumps & Powerheads (VDM Module Required to Interconnect with Apex System or Apex Lite/Jr)


Apex Ready+ Products

LEDs (VDM Module Required to Interconnect with Apex System)


ManualVDM Module User Manual

More Information
UPC 696859111044
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Product Questions

Can I connect the VDM directly to my Abyzz a200 pump with the serial connection to control 0-10v?
Or must I use the RJ45 connection and adapter?
Question by: Ira Sugar on Nov 19, 2021, 6:13 PM
You would use the serial connection kit to the pump and then would need a RJ45 to 3.5mm stereo connection to connect the Apex to the serial port adapter
Answer by: William Glenn (BRS Staff) on Dec 13, 2021, 12:48 PM
will these work with the maxpect gyre 200 series and if so do i need anything else to get them to work with it?
Question by: Jared on Feb 5, 2020, 8:10 PM
Hey there,

You will need the Gyre interface module from Ice Cap: https://www.bulkreefsupply.com/pumps-plumbing/aquarium-powerhead-pumps/maxspect-gyre.html

Take care
Answer by: Thomas Billington on Feb 6, 2020, 8:51 AM
I have the newest apex. Do I need this to run my tunze pumps? I see a compatable outlet on the powerbar already. Can I just use that instead?
Question by: Nicole Corbett on Nov 24, 2017, 12:13 PM
Your Apex comes with two Variable Speed Ports (each port will control two pumps) and with the 2 Stream Pump to Apex cable you can plug each end of the cable into separate Tunze controllers, and then the other end into an open variable speed port allowing you to control the pumps independently.
Answer by: Charlie on Nov 24, 2017, 1:44 PM
Is the vdm module what I need to connect my orpheks to my Wi-Fi apex? If so, do i also need a cable?
Question by: JJ on Jun 7, 2017, 5:22 AM
If your Orphek model has an RJ45 connection port, this will allow you to connect and control your light through the VDM dimming control module. There are a number of Orphek models, and at the moment we don't have comprehensive information, but we aren't aware of an option to control Orpheks directly through wifi communication.

Answer by: Zack on Jun 13, 2017, 7:43 PM
Would this be what I needed to run my Zetlight 7000 lights? What all would I need to do?
Question by: Michelle on Jun 5, 2017, 4:45 PM
I'm afraid the ZD-7000 doesn't have a control option for connecting to a 0-10v reference port for control through this module. The ZS-7000 can be controlled and programmed through the included wireless remote, or with the use of the A100 wireless bridge adapter can also be connected to and programmed with iOS and Android mobile devices.

Happy reefing!
Answer by: Zack on Jun 12, 2017, 2:25 PM
Could I use this with an Apex Jr. to perform simulations and dimming on aRadion XR15w Pro?
Question by: LeTroy on Jun 27, 2016, 9:54 PM
Not with the VDM for that you will need the WXM by Neptune Systems.
Answer by: Connor on Jun 28, 2016, 6:53 PM
Are there any advantages to using this for Kessil lights vs the actual controller Kessil makes?
Question by: Hank on May 8, 2016, 1:09 AM
Great question!
There is not a major advantage to using the VDM instead of the controller. The Controller is nice as it is easy to set up and control. The VDM will require some programming to get the kessil to run for specific times. Feel free to let us know if you have any further questions!
Answer by: Connor on May 10, 2016, 5:18 PM
I have 3 AI Sols, a Waveline 6000 and a Gyre 130 with Icecap module. I bought one Apex VDM module so far. Do I need another? Not understanding how many ports are on the module. AIs hook up off serial connection correct?
Question by: Lisa on Apr 14, 2016, 12:02 PM
Great question!
You will need one module for the Gyre (depending on if you want reverse the unit will take up v1/v2 and v3/v4. One Voltage port for the wave line (either V1/V2 or V3/V4) the sols require the serial port. If your sols are unable to be daisy chained (I do not believe they can) an individual VDM will be needed for each. Feel free to let us know if you have any further questions!
Answer by: Connor on Apr 19, 2016, 10:55 AM
Can I use this module with the Koralia controllable pumps? Or will it just work with the Tunze pumps.
Question by: Jake on Nov 19, 2013, 6:59 AM
Hi Jake,
The module only works with the Tunze pumps (as far as controllable pumps goes that is). The Koralia doesn't have any 3rd party controllers that I am aware of and the line has also been discontinued.
Answer by: Bulk Reef Supply on Nov 19, 2013, 6:59 AM
If I'm going to control 4 Kessil A360 lights and 3 Tunze powerheads, do I need two VDM's or 1 VDM and a ___________ ?
Question by: Scott on Sep 24, 2013, 5:59 AM
Hey Scott,
It depends on how you want to control the lights. If you want every light fixture to be able to be controlled individually, then you would need a VDM port for each individual light. Otherwise you use a single VDM port to control the first light and then daisy chain the other lights to the first light. The first light will be controlled by the controller and act as the master light and control all the daisy chained lights.
Answer by: Bulk Reef Supply on Sep 24, 2013, 5:59 AM