ReefKeeper Lite Basic - Digital Aquatics

ReefKeeper Lite Basic - Digital Aquatics
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  • ReefKeeper Lite Basic - Digital Aquatics
  • Digital Aquatics Reefkeeper Controller
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ReefKeeper Lite Basic - Digital Aquatics

90% Recommend this to a friend (89 of 99)

SKU: 205500
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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 and do not need internet connection, 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 Features

  • Head Unit

  • 1 PC4 power bar (4 total outlets)

  • Digital Aquatics Temperature probe


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Product Questions

What is the maximum number of modules that can connect to the Reefkeeper lite?
Question by: Michael on Oct 22, 2013 5:42:00 AM
Hi Michael,
The maximum number of modules is 4. This does not include the head unit itself but all connected PC4's, SL1s, MLCs, etc.
Answer by: Bulk Reef Supply on Oct 22, 2013 5:42:00 AM
Probably a couple stupid questions here: Can this product be used as a timer for my ATI 6 bulb T5 (its non-dimable and I dont want to dim - just want the blues to turn on first)? While at the same time replace my wavemaster pro that feeds two Sicce voyager 3's?

With this $119 kit would I need to buy anything else? I see maybe the expansion power strip for the fan, heater, pump, and skimmer.

Thanks for the help,

John Q

Question by: john q on Jul 22, 2014 9:17:00 AM
Hi John,
The ReefKeeper system basically controls individual outlets. If the blue lights in the fixture are on their own power plug, then it isn't any problem at all for the reef keeper to do that. As long as you make sure to have enough outlets you can certainly plug your pumps into it and use it as a wavemaker as well.
Answer by: Bulk Reef Supply on Jul 22, 2014 9:17:00 AM
Can the reefkeeper lite control titanium heaters? and what is the max wattage?
Question by: Bruce on Jan 27, 2016 7:22:00 AM
Great question!
The max wattage in standard outlet is 300 watt, they can control larger wattage on the separate relay outlet or with the expansion socket.
Answer by: Connor (Admin) on Feb 3, 2016 5:26:00 PM

I am sure it is listed somewhere but I can not find it, can you buy the Lite Plus but have the head unit updated to the elite head unit ?
Question by: Jason on Jan 20, 2016 10:03:00 AM
Great question!
We do not sell the elite head module separately and would expect it not to work with the lite from the different connections. You may want to contact DA directly. Feel free to let us know if you have any further questions!
Digital Aquatics – 425-527-0995
Answer by: Connor (Admin) on Jan 27, 2016 7:12:00 PM
Do I need a special heater to use this function or the one I have .I'm thinking that I just turn my heater up on high and then use the controller to keep the temperature. ??

Question by: Edmund Secula on Oct 9, 2013 1:26:00 PM
Hey Ed,
You don't need any sort of special heater. Most folks use it the way you describe, or if they have a heater that is fairly accurate to begin with they will set the heater to the desired temp (say 78 degrees) and then set the reef keeper to 79 degrees. This allows the heater to control itself while still having the RK act as a backup incase the heaters thermostat fails.
Answer by: Bulk Reef Supply on Oct 9, 2013 1:26:00 PM

Full Details

ReefKeeper Lite Quick Start Guide


ReefKeeper Lite Application Guide


ReefKeeper Lite User Guide


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 Controller 4System Lab 1System Lab 2Programming CouplerTemperature ProbepH ProbeSalinity Probe V2System Interface DeviceNet Interface Module
Lite Basic x x     x x     x  
Lite Salinity x 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 Noris on 1/18/2016

    bought this to control my three Koralia 3rd gen power heads, works well, can also run them on random mode, just select the maximum on time you want and they will vary within the timeframe, even has night mode if you want any of your pumps off. Lots of options for future expansion as well. Programming was a bit challenging at first but once you get the hang of it, it's second nature.
  • awesome By Ruben on 1/11/2016

    has made my tank that much easier to maintain
  • A Good Product at a Great Price By Alton on 1/5/2016

    This is my third RKL on my third tank, My first one was purchased years ago and still works great. I use them for heater and lighting control. On my 300 I use Metal Halide's and several times when my AC quit working it shut my MH's off so not to over heat my tank. Plus I love the accuracy of keeping my heater working within one degree of its setting.
  • Nice but too confusing By HannSolo on 12/20/2015

    Its more difficult than it really needs to be. The instructions are pretty crappy. It doesnt even label what number the plugs are, even tho that's very important information. It apparently has a lot of functions but im only using it as a temperature controller. Even so i needed to watch a youtube video to figure out how to do it.

    Its pretty cheaply put together. the tape on face of the plug strip was crooked and peeling off when i took it out of the box. Even tho its cheaper than other controllers i would still expect better for the price.
  • it works great By paul on 11/24/2015

    it works great
  • good basic controller, great customer service By George on 11/2/2015

    I received this controller on Thursday afternoon and set it up on the dining room table that evening, on Friday when I went to install it on my tank I found whenever the power was disconnected the time and date would revert to midnight January 1, 2000. I sent an email to Digital aquatics explaining the problem and was asked for a copy of the invoice. After emailing the invoice Digital Aquatics responded that a new unit would be sent out that day. I received the replacement on the following Wednesday.
  • bare bones, yet fairly easy to use By Christian on 10/20/2015

    as far as programming goes it's simple. doesn't really come with instructions but it's not that hard to understand. I like how it's not bright orange. it's descreet and blends in with the rest of the wiring. it has both form and function.
  • Great for the price By Nick on 6/29/2015

    Works great but setting it up was a pain. Toss the instructions and watch the BRS setup video.
  • Great product, bad instructions By Chad on 4/13/2015

    This controller works great and has made dosing and temp monitoring much easier. I might expand to other functions but for now it is doing exactly what I need. The instructions however are horrible, looking online will give better information about how to use it but still not clear. I use mine for controlling dosing pumps and using the multi-timer function took a little to get figured out. Once I got that down it was easy to use but is not clear up front. I would still get it again though.
  • I like DALite By Sonny on 3/2/2015

    I bought this item so that I don't have to use so many timers on my tank. Works like a charm. I almost didn't buy this because of all the negative things I was reading in other reviews. Well let me tell u I havn't had any of those issues as of yet, lite was easy to set up , had no problems doing so. If u down load the instructions frm there web site it is pretty much spelled out for u. Glad I took a chance on this controller.
  • Simple but not user friendly By Robert on 1/21/2015

    I purchased this 6 months ago and I just installed an apex system. The system works but is very difficult to use. Email alerts are impossible with a GMAIL account and several others. Accessing the system from a computer outside your network is next to impossible. I never could get it working. Upon getting the system I ended up wait 4 weeks for DA to send me a new a new SL1 module since mine didn't work out of the box. Then when I added in an SL2 module I had to reset the system back to factory setting to get this to work. If you can't afford a apex at least get the next step up from this head unit.
  • Amazing By Andrew on 12/31/2014

    This is an amazing first controller gives a ton of Control ability. And BRS is and amazing Place to buy mine came in with the wrong temp probe and they helped getting it all worked out and very fast.

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