ReefKeeper Lite Plus - Digital Aquatics

ReefKeeper Lite Plus - Digital Aquatics
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ReefKeeper Lite Plus - Digital Aquatics

84% Recommend this to a friend (98 of 116)

SKU: 205501
In Stock: 58
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Quick Overview

Why does BRS recommend this?

The Digital Aquatics Reef Keeper Lite is a great little aquarium controller that makes programming very straight forward and easy.  The options are somewhat limited compared to other controllers on the market, however if you are looking for a simple, easy to use controller, with the availability to be expanded upon, the Reef Keeper Lite units are some of the best.

Digital Aquatics ReefKeeper Lite or RKL comes in 3 different levels. They are small expandable and perfect for nano tanks, beginners, and everyone looking for a mid level controller. ReefKeeper Lite's are easily the best value controllers on the market. See below for quick compare chart of the differences between each RKL.

ReefKeeper Lite Plus Features

  • Head Unit

  • 2 PB4 power bars (8 total outlets)

  • Digital Aquatics Temperature probe

  • ReefKeeper SLX pH and ORP Module(Inputs: pH, ORP, Temperature, and 2x Switch Ports)


Full Details

RKL Users Guide


RKL Application Guide


RKL Quick Start Web


The ReefKeeper Lite or RKL is an all new completely redesigned controller from Digital Aquatics. These midlevel controllers come in three different levels. Check our quick compare table below for the differences between each. Please note that some of the advanced modules and features of the ReefKeeper Elite are not available for the RKL.


Quick Compare - ReefKeeper

 Head UnitPower Bar 4System Lab XProgramming CouplerTemperature ProbepH ProbeSystem Interface DeviceNet Interface Module
Lite Basic x x   x x   x  
Lite Plus x x (2) x x x x x  
Lite Net x x (2) x x x x x x
Elite Plus x x (2) x   x x (w/calib. packets) x  
Elite Net x x (2) x   x x (w/calib. packets) x x

Digital Aquatics ReefKeeper Lite (RKL) Features


  • Expandability: Every RKL can interface with up to 4 modules in almost any configuration.
  • Data reporting: The RKL can report the min, max and average over the last hour for all in and outputs.
  • Improved 5 button interface: All ReefKeeper Lite's have a 5 button interface. Traditional entry level controllers feature only 3 button interfaces.
  • 16 dedicated timers all with day of the week capability
  • Audible and visual feedback
  • 16 dedicated alarms
  • New control functions: Improved controller, multi-timer, light, lunar, and pump controls
  • Free software upgrades: ReefKeeper software upgrades from Digital Aquatics is free and easy to install via USB cord
  • MyReef software requires Windows Operating system
  • Independently programmable night mode allows moonlights and pumps to be adjusted in the evening times
  • Wavemaker: ReefKeeper Lite's have two wavemaker cycles that control separate pumps to simulate wave motion. Each cycle can be timed and the cycles can be turned off during night mode to give a calming effect.
  • Programmable standby feedback mode can be set from 1 to 59 minutes during which the ReefKeeper Lite shuts down selected powerheads and pumps. This allows for calm feeding condition and is useful for conducting maintenance.
  • Head unit easily mounts in a number of professional custom looking ways.
  • Splash proof face plate
  • Internal battery backup keeps time and settings of the ReefKeeper Lite safe for years. Power outages will not require the adjustments that other light timers need after power is restored.
  • Simple menu configuration has an simple interface that allows for easy setup and navigation.


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  • Does the job By Felix on 10/9/2017

    I do not have an intricate system so I don’t need much. Just to control temperature and monitor ph specially dosing kalkwasser. But I have issues with the my reef 2.0 program not recognizing my modules and not responding every time I click on a different icon. After much dealing with it I was able to program the essentials.
  • Awesome product By Dan on 9/3/2017

    I've only really used one controller so I can't say a whole lot about. But it does what I need and a lot more then I was expecting. I'll always have a controller on all future tanks.
  • BRS is great but ReekKeeper support is VERY BAD By JayB on 8/26/2017

    4 stars because it like what the unit does for me, love the automation, 0 Stars for support. I purchased a Lite for my first tank and all was good. Sure it has a basic menu driven input for the physical system with some practice it is easy to get to know. Using the computer interface from a laptop running win10 was easy enough. One trick i found was naming all the modules so you can see them better in the console. Anyway, decided to get the Plus for my big tank. Again everything as expected but the PH probe will not stabilize. So i tried to call support ... voicemail, sent an email. Not too bad 24 hours has a response with a question for me to check something and replied did this a couple of times 24hr turn around. They figured that it was a probe issue and then all comms stopped for days. Left voicemail, email nothing. I reached out to BRS to see if they could help. BRS was great the jumped in and tried to contact them. A few days later ReefKeeper finally replied that i needed to give them the invoice and my information and a credit card for a deposit. BRS already sent them the invoice so I resent it along with my information and followed the instructions to call to give my CC. Well support doesn't answer so chose sales and they answered ... go figure right? Gave them my card and he said he'd take it over the THE support guy. Days go by and support GUY sends me an email sales for got to give it to me i have it now can you send me your invoice and the requested information.... REALLY for the 3rd time i have sent them the information and again nothing for days.
    Moral of the story, if you buy this and something breaks you will likely have to just buy a new part and forget talking to the company.
    Very SAD
  • Cardo doesn't Recommend By Cardo on 7/19/2017

    The provided instructions are on-existent. The downloaded manual is very, very poor. The controller simply doesn't work as described. Very frustrating purchase.
  • Happy By Danny on 6/18/2017

    Great product. Very happy. does everything I needed and more.
  • Get the basic or go all in on an APEX By Nathan on 6/8/2017

    I'm kinda old school. Not very techy. I finally decided I should buy something to control my heater and cooling fans- and then figured the extra power bar and probes of the plus system would be justified. I regret the extra purchase. This thing kinda sucks. I've spent way too much time trying to program it, downloading firmware updates, pulling wires out of sockets and plugging them into different ones. It's just - well, I kinda hate it. I still cant get the head unit to recognize the sl1 module so I still cant use my ph probe. The internet is loaded with videos all about this thing- and none have really done much to help me. It does replace light timers and monitor my temps and prevent over heating tank- I guess- but... I dunno. I'm not really happy with the purchase. BRS is a good company, but their videos haven't done me a lick of good when it comes to setting this thing up. They all just seem to assume that all the parts are all plugged in and talking to one another perfectly- which is the farthest from my experience. This thing in it's most basic form I could see being justifiable- but don't waste your money on anything more than that.
  • First controller experience By Bryan on 2/1/2017

    I have not been in the reef community very long, but this is my first time using a controller. It does exactly what I need it to do as far as heaters and skimmer are concerned. I was not looking for a complete aquarium controller that managed every aspect of my tank. I did not want to put all my eggs in one basket so to speak but overall pleased with what I got with DA reefkeeper. I didnt give it 5 stars because I haven had experience with other controllers to say this is the best thing I have ever used.
  • Timers don't function and no support By Anna on 1/17/2017

    I purchased this product due to the great review by BRS TV but it hasn't lived up. Couldn't get the PH to calibrate, can't get the timers to work - as soon as I set a timer, it shuts off the power to the channel. NO ONE answers or returns calls at Digital Aquatics. I SOOOOOOOO Wish I'd paid the extra for APEX. All I have is power strips and they're not even surge protectors!
  • I like it By Dave on 12/11/2016

    I use it with the BRS dosers and 2 part, water pumps, lighting (tank and sump), heater, fan and pH probe. It's easy to program with the computer or the manual interface. My only regret is that I didn't get it before I bought a pH probe/meter and heater/controller. I could have saved money getting the Reef Keeper first. If you want to attain stable calcium/alkalinity measurements, a controller makes it much easier.
  • Will always have a controller on my tanks from now on... By Chris on 12/6/2016

    For many years I was one of those guys with all of the timers and switches...everything "automated" in an old school fashion.

    I finally decided to try one of these when they went on sale...very satisfied. I can't imagine setting up another tank without one now! Really cleans-up the setup and automates so many functions with one device. Programming both with PC and the pad interface are fairly intuitive and I found setup to be fairly straight forward.
  • NO CUSTOMER SERVICE!! By krazykelbs on 9/9/2016

    I purchased this product in Jan 16' starting off doing manual programming was fine until I wanted to program off my personal computer, then the nightmares began! The software would load onto the computer but not recognize the controller. Called the customer support, 9 time out of 10 you will not get a live person, forced to leave message. The one time I was able to talk to a live person he directed me to the FAQ web page. After viewing the page I come to realize that I was not the only person with this type of problem, and apparently not very many people were able to get the problem worked out! I contacted BRS to see if anything could be done on their end, THEY(BRS) has outstanding customer service! BRS did about all that they could do and said they would also try and look into having someone contact me to help solve the problem. if you only have a light or two and maybe a pump to control this would work ok, but if your trying to control a bunch of different things. . .check into a different brand and spend more money. In the last 3 months I would say I have left 12-18 messages and way too many emails to count, with only 1 reply and no resolve to my issue.
  • Well worth the investment By Dan on 9/9/2016

    I have had mine for around 7 months and absolutely love it. It was a little difficult to figure out at first but I downloaded the instructions of of their website and was able to figure it out. It has worked very well for me and I haven't had any issues with it.


Ask a question

Product Questions

Can this controller monitor salinity with an add on module? Which module do I need and will the slain it prob have to be bought seperate as well. What I want is the ability to monitor temp ph and salinity more accurately.
Question by: Kirk ballinger on Jan 28, 2016 11:46:00 AM
Great question!
There is the SL2v2 salinity module available. Keep in mind you will need the Reef Keeper salinity probe as well. Feel free to let us know if you have any further questions!
Answer by: Connor (Admin) on Feb 4, 2016 5:37:00 PM
Do the two PB4's that come with this unit count towards the 4 modules that the RKL supports?
Question by: Ben on Oct 2, 2016 5:55:00 AM
Hey Ben,
Yes, the two pb4 modules and slx count against the 4 module count. This kit will accept one additional module.
Answer by: Jason Smith (Admin) on Oct 7, 2016 1:52:00 PM
What do I need to add in order to monitor pH with a RKL?
Question by: Brandon Chapman on Jul 31, 2016 7:28:00 PM
Hi there,
To add pH monitoring you will need to purchase a pH probe along with the SLX module. That will allow you to connect the SLX to your RKL system and then connect the pH probe to the SLX module.
Thanks for the question and if you have any others let us know.
Answer by: Charlie (Admin) on Aug 1, 2016 9:49:00 AM
As I was watching another video on the Apex Controller he mentioned lab grade probes etc. Since I do have the RKL Plus I am wondering what the life expectancy is on the PH and ITemp probes? Is there a recommendation on when they should be replaced?
Question by: jeffrey castor on Jan 26, 2017 5:27:00 AM
Great question! Although there is no exact life expectancy for those probes, we typically change our probes for our tanks every 1yr - 1.5yrs. :-)
Answer by: Randy (Admin) on Jan 29, 2017 2:16:00 PM
I would like to know if I could get the power bar RKM-PB4 in 220v.

Question by: Ravinder on Apr 18, 2016 3:09:00 PM
Great question!
All items on the site are designed and sold for use in the US and Canada. Feel free to let us know if you have any further questions.
Answer by: Connor (Admin) on Apr 25, 2016 6:48:00 PM
I'm planning on running 2 kissel 360 led lights. The controller that goes with them seems to have a large array of set up options. Would the Reef keeper also allow for the same set up functions as the kissel controller or does the Reef keeper only offer basic controls? Thanks
Question by: Roland on Jan 9, 2017 4:09:00 PM
Great question! You will be able to brighten/dim them as well as control the spectrum through the ALC module. You would also be able to program them to your desired lighting schedule. :-)
Answer by: Randy (Admin) on Jan 10, 2017 11:30:00 AM
can I use the rkl plus to control the brs dosers
Question by: Lincoln Case on Sep 24, 2016 6:22:00 AM
You sure can! Check our Ryan's video on that very topic! :-)
Answer by: Randy (Admin) on Oct 7, 2016 9:59:00 AM
Does this include a pH probe? What is all that is included in this package?
Question by: Paul on Mar 13, 2016 11:20:00 PM
Great question!
This package will include the power controller x2, pH probe, iTemp Probe, SL1 module for pH control and the option to add on ORP. Feel free to let us know if you have any further questions!
Answer by: Connor (Admin) on Mar 15, 2016 11:11:00 AM
Do you know if reefkeeper will be able to control a diy Steve's led retrofit for a biocube? I have a typhoon controller on it right now.
Question by: Aaron on May 11, 2014 4:33:00 PM
Hi Aaron,
I am unfamiliar with that setup but so long as it has the ability to use a 0-10v input line to control the LED's themselves then you shouldn't have any problems with the reefkeeper, though keep in mind you need the ALC module.
Answer by: Bulk Reef Supply on May 11, 2014 4:33:00 PM
I want use this for control of the power heads but is TUNZE the only brand that is compatible?
Question by: Dan on Aug 30, 2014 1:22:00 AM
Hi Dan,

By using the APC module you will be able to connect Controllable Tunze pumps.
I am not aware of any other pumps supported by this module but it is possible that there have been adapters released to control other DC power heads.
I would also take a look at the ReefKeeper DCI DC Pump Interface. It may work for what you have in mind.

I am sorry I couldn't be of more help.
Have a great day :)
Answer by: Bulk Reef Supply on Aug 30, 2014 1:22:00 AM
Would this be good to run on a 20 gallon reef?
Question by: Me on Oct 24, 2013 3:12:00 PM
Hey there,
I actually have a controller running on my 16g here at the office. Despite the size of the tank, there is just some equipment you never can really get away from like heater, timers, etc which really makes a controller a great choice for just about any size aquarium and it would be a great choice for your tank.
Answer by: Bulk Reef Supply on Oct 24, 2013 3:12:00 PM