ReefKeeper Lite Basic - Digital Aquatics

ReefKeeper Lite Basic - Digital Aquatics
Click on image to zoom
View full size image

More Views

  • ReefKeeper Lite Basic - Digital Aquatics
  • Digital Aquatics Reefkeeper Controller
  • ReefKeeper Lite Basic - Digital Aquatics Included Parts
  • ReefKeeper Lite Basic - Digital Aquatics Power Strip
  • ReefKeeper Lite Basic - Digital Aquatics Probe
  • ReefKeeper Lite Basic - Digital Aquatics Box

ReefKeeper Lite Basic - Digital Aquatics

89% Recommend this to a friend (93 of 104)

SKU: 205500
Please wait...


1-3 day service on orders over $249

What's this?

Ships today
order in
0h 29m

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 PB4 power bar (4 total outlets)

  • Digital Aquatics Temperature probe


Related Products

Ask a question

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
I am considering a ReefKeeper Lite for just controlling my lights. Will the PC4 power bar be able to handle 3 standard 120w LED fixtures and 1 IceCap ballast that fires 2 160w VHO bulbs? I want to have all 4 sets of lights turn on and off at different times. Will the ReefKeeper Lite handle this?
Question by: Larry on Apr 12, 2016 8:15:00 AM
Great question!
The Reef Keepers power bar can be individually controlled and work well for your situation. Feel free to let us know if you have any further questions!
Answer by: Connor (Admin) on Apr 14, 2016 5:36:00 PM
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
Does the head unit have a probe connect for ph and salinity or is there something extra that I have to purchase to connect a probe?
Question by: Paul on Mar 13, 2016 6:14:00 PM
Great question!
The ReefKeeper lite will not come with a pH module or salinity. This can be purchased with the SL2 module and the respective probes. I have included a link below to the SL2 module.
Answer by: Connor (Admin) on Mar 15, 2016 10:39:00 AM
Can the reef keeper lite basic control 2 150watt jager heaters or will you have to buy something extra and is it terribly hard to program it to do so thanks
Question by: Nick on Mar 27, 2016 9:32:00 AM
Great question!
The reef keeper will be able to handle 2 heaters no problem. You can simply program the heaters outlet to turn on or off at certain temperatures. Feel free to let us know if you have any further questions!
Answer by: Connor (Admin) on Mar 28, 2016 7:04:00 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

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 XSystem 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.




Items 1 to 12 of 104 total

  1. 1
  2. /
  3. 2
  4. /
  5. 3
  6. /
  7. 4
  8. /
  9. 5
  10. ...
  11. 9
  • a good basic controller By corey on 4/29/2016

    I use this on my biocube 29 for controlling my heater fans lights and return pump and while I have never used an apex I have to say it does the well. certainly enough to make me think springing for one for a tank this size would be overkill. I actually just bought another one yesterday just for the power bar. the $20 difference does not make sense to me so I just put the extras back maybe for another tank later and used the power bar. *also a note mine was shipped with a PB4 not a PC4 so that was nice to have that upgrade, all in all I am very pleased with digital aquatics. I will say updating some of the modules to the latest firmware can be more of a chore than it needs to be, but how often do you really need to do that. and programming on the actual head unit is too much effort. so just bring your laptop over when you want to change something hook it up and use their software to program. much easier.
  • BRS is great, reafkeeper not so much By JJS on 4/10/2016

    I guess I can't say too much. Setup was easy. I followed the directions and set up in the living room. Once I plugged everything in at the tank. Device went dead. I traded it for a Apex Jr.
  • Almost perfect By JonnyReefer on 4/4/2016

    I bought this for two reasons: to get rid of the bulky timers and to have a dependable and easy to read thermometer. This product is perfect for that and I'm very happy I got it. The only reason I gave 4 stars is because the power adapter only has 4 outlets, greatly limiting the # of power sources I can have. If they made an 8 bar, this controller would be perfect.
  • Solid, Amazing Value By James on 2/21/2016

    This controller is wonderful. I am particularly excited about the ability to expand upon it by adding other modules. The power bar left something to be desired because it has so few slots but another bar will solve those problems soon. The temperature probe is great and during cycling it kept my cobalt heaters in check by not allowing them to go above where i wanted them to. The low profile controller looks great on my black stand, but i had to find some screws to place it because the ones that came with it were only meant for the bar. I expect this controller to outlive my stand and tank by a very long time.
  • Great for New Reefers By Brad on 2/15/2016

    As a new reefer (little over a month into the hobby) I read a lot about tank failures and such. Immediately pretty much new that a controller was the way to go. I bought the ReefKeeper Lite. It is priced good for a beginner, expandable and easy to set up and use, and can't say enough about how happy I am with it so far.

    Only down side is that, the MyReef software isn't working and keeps giving me a .NET Framework, JIT Debugging, error.

    I called Digital Aquatics, and left a message was called back in a few hours, the same day. Talked with Eric, it is a known problem, with the USB cable driver, and trying to use tablets, especially like the Surface Pro, like mine. They are working on a fix, with Microsoft, and hope to have it out soon, so I can't really knock them on the rating for knowing about it, calling me back the same day, and helping to make me aware that it's on their side.

    The problem DOES NOT affect the actual control head itself, just the My Reef software side.

    Would buy another one!
  • 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.

Write Your Own Review

You're reviewing: ReefKeeper Lite Basic - Digital Aquatics