ReefKeeper Lite Basic - Digital Aquatics

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

89% Recommend this to a friend (82 of 92)

SKU: 205500
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Quick Overview

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
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 Unit Power Controller 4 System Lab 1 Programming Coupler Temperature Probe pH Probe System Interface Device Net 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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  • 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.
  • Defective PC4 By Nick on 11/9/2014

    Just powered up my controller and the PC4 reads 11.2 amps with nothing plugged in or turned on. It was this way from the start. Looks like a got a defective PC4. I suspect one of the drivers for channel 2 or 3 is blown. Bummer!!!!! I hope this does not turn into a nightmare.
  • Good product but should have bought Apex By Richard on 9/5/2014

    Just installed the Reefkeeper and, while it is a good product, I already regret not getting the Apex instead. Had I not already unboxed it, I would return it and upgrade to Apex.

    Documentation is lacking and software is a .ZIP file. Who uses .ZIP anymore?

    For not much more money I could have gotten into the much more versatile Apex system. Like I said, it works as advertised so I'll make the best of it.
  • the second time's the charm By tmann51 on 6/19/2014

    This is the 2nd Digital Aquatics Reef Keeper Lite I've purchased. The first one is a few years old, this time, I needed the ALC rather than the SL1 so I ordered the basic model. I use the ALC to ramp and control the intensity/color of my new Kessil fixures. I took the liberty to call DA tech support to help with the lighting program, they were very helpful.
    I also set control of my heater via the temp probe. I will eventually use it to dose 2 part.
  • Solid By MikeL152123 on 5/30/2014

    This is my first controller and I must say I am pretty happy with it. I am currently only using it to control my heater but will be adding a fan this week that will also run off the temp. probe. Overall it was easy to program and navigate through the menus. I would recommend this to anyone looking for an affordable way to run their tank.
  • Works Great By James on 4/26/2014

    Bought this to use on my 40b set up. Have had no issues with several different modes tested and used. Mainly running lights and a heater but tested the wave maker function with two koralia 1500's and had no issues. Great entry level controller with good expandability.
  • Good controller with some quirks By Greg on 4/12/2014

    Overall it is a pretty solid controller that lets you go from pretty basic monitoring/control to pretty advances. If you're anything like me that can be a bit dangerous since you just keep on adding things on.

    I have seen some weird behavior from the controller which is always solved by disconnecting the head unit and plugging it back in. Never it seen it affect the components controlled in a negative way, but does make me worry a bit about relying on it too much to automate / detect when things go wrong.

    On the plus side my experiences with customer service have been great!
  • Good for the price By Todd on 3/5/2014

    I purchased this mainly to be able to control my lights and heater. I needed to save space in a small cabinet under the DT and this worked great. I wish i could give a 4.5 star rating instead of 5 due to a couple of issues. One is that the iTemp controller has to use a bus port. So to use the myReef software you need to unplug this. I've learned since to do some of the programming features through the head unit but i prefer the more intuitive windows interface. Unplugging the iTemp probe to do this gets annoying fast. If they'd just put an additional bus plug on the head unit this would be solved. I hope the lack of this wasn't to get people to buy the bus unit or the net module.

    Another annoying feature was setting up the heater. Setting the heater up as a "heater" didn't allow me to use the hysteresis feature so once the heater hit the target temp it turned on/off constantly. Through online searching i learned that i should set the heater up as a "controller". Once i did this i was able to use the hysteresis feature and it now is working properly.

    For the price i'm happy i chose this controller to run my tank. I did buy an extra PC4 module with my original purchase and later added the MLC. If DA would make just a few minor improvements, this entry level controller would be a no brainer purchase.

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