A couple weeks ago I made the jump from Metal Halides to LED's on my display tank.
Originally I was running two 250W Metal Halide single ended bulb setups with Lumen Bright Mini reflectors and Lumatek 400W/250W Switchable Ballasts with XM 20K bulbs. I replaced them with four AI SOL Blue Modules.
My first impression was that I made a mistake. I wasn't sure I liked how they looked but decided to keep pressing on with it. Now that I've had them up and running for almost a month I'm happy I made the switch.
Now for the details.
Each module has eight pucks containing three 3 watt LED bulbs. The construction is very nice and clean. There is a built in fan on the back side of the heat sink to keep it cool.
On one side of each module are three ports, one for power and two data ports. Each module needs to be plugged into a driver (that is included) and if you want to control the module the controller gets plugged into the data port. If you want to hook up multiple modules on one tank you only need one controller. The controller is plugged in to one module then you can "daisy chain" the rest, meaning there is a data cable that goes from the first module to the 2nd module and so on. This allows one controller to operate all the modules equally.
Two screws are threaded into the top of the module through the heat sinks. These are the mounting screws that allow you to mount the module to AI's rail system or a custom rail that you make yourself. The nice thing about their rail system is that you can slide the modules left to right if needed.
The controller is not all that user friendly but after time it's easy to get the hang of it. The controller allows you to set up to 14 timers. Each timer allows you to individually choose which percentage you want the white, blue, and royal blue LED's to be set at. This allows you to choose the color of your light, in my opinion anywhere from a 6500K to well over a 20,000K with or even pure actinic. It also allwos you to do a ramp up and ramp down. This means that you can set how long it will take to get form 0% to your predetermined setting. So say you have them set for 50% white, 60% blue, and 60% royal blue you can choose a 30 minute ramp up time. This means it will take 30 minutes to get from 0% to the 50%/60%/60%. To me this is one of my favorite things about these lights, it's more realistic to sunset/sunrise. You can get a module to run them through Reefkeeper Elite but I didn't want to be reliant on that to run the lights in the event the Reefkeeper ever fails.
When I had my metal halide setup I would fluctuate from 78'F to 83'F every day. With the LED's I fluctuate maybe 1/10 of a degree per day according to my Reefkeeper Elite and that could easily be house temp.