Frank, only the RK Elite can control the AI unit. However, you still have to buy an external module. Furthermore, I don't think you can get teh same level of independant control of blue and white LEDs. If you can't then I really dont see the point. The standard AI controller will do lunar, and sunrise /sunset. If that is all you get from RKE, then I would pass. You will have to contact DA for this. I do not know that product line very well.
McKibben, the AI unit connects to the Profilux through a serial port. This cable can carry 9 wires. I do not think all pins are used. This is how the Blue and white LEDs can be separately controlled. The Profilux powerbar has nothing to do with the AI unit. In fact, the powerbar is only used to control 110volt devices, like ATO pump, heater, powerheads, etc. The Tunze pumps I use and the AI unit are plugged into a standard wall socket. Then, the Tunze pumps and AI unit are controlled by the Profilux through special low voltage cables and special ports, not the POWERBAR. Hope this helps.
Thanks for the link to the Maxspect. I did some reading and reviews of those threads, plus I looked at the Maxspect website.
I am impressed with the packaging and quality of the modular system and power supply. In fact, for the price I do agree that this is probably the best system when comparing to other DIY LED arrays or those cheap ebay LED banks on a plastic board. Most of those use crappy 1 watt LEDs which have no business on a reef tank. The 3 watt LEDs are a must, but the Maxspect has many limitations.
I would love to have one of the Maxspect systems to to with and do some LUX and PAR measurements, but I don't. So, the following information is simply speculation, but worth considering:
1. LUX and PAR measurements are good directly under the Maxspect LED system, but I did not see any recordings for the angles. This is one of the major limitations of LED systems. Light intensity is gfood directly under the LED lamp, but very poor at the angles. The Maxspect LED array arranges BLUE and WHITE LEDs equally around the array and none use a lens. The AI system has 2 White and 1 Blue LED under a single lens. Without a lens, the LEDs cannot spread the light around a reef tank.
2. Maxspect system has no stock controller or compatibility with any other controller. Again, I argue that LEDs are still an unproven technology. I never would have bought an LED system if I could not controll the hell out if it. I would rather own a MH system and put it on a simple timer then an LED system for the same money that is not proven to grow coral. I simply don;t see the point of owning the Maxspect LED. All you get is an LED light with no more controll than a MH. It sost about the same, and you don;t know if coral will grow under it. Especially without a lens, the LEDs may look good in the tank, but won't perform good. Unless, you stack al lthe coral directly under the LED, I doubt it will grow coral in your larger reef tank.
3. Reliability and customer service. You definately pay more for Profilux and AI, but you get a lot more. You get full controll of the LED system and great customer service. You simply won't get this support from an oversees company that sels the Maxspect.
Examples: The new AI LED module is now available. They use a better lens that promises a much greater spread spectrum and light intensity that compares with a 400watt MH system. I contacted them for an upgrade for my older unit and they said they wil lbe made available in March, for a very reasonable upgrade price. The new version also uses that Cree lamp that you were referring to earlier.
Profilux also listens to its customers. I should be getting the PIII upgrade next week ( I will do a full report on it) for a fair upgrade price. But, the best thing about the Profilux is free software upgrades. I don't know if some of the new upgrades were because of me (I'm sure other customers requested the same things) but, they are in tune with their customers. I had complained about the Tunze pump intervals being lame. The adjustments were in 0.1 second increments. On da Artsy Cube, I use two Tunze pumps in wave mode. The ideal wave frequency is between .6 and .7 seconds. Well, the new software version came out and offered changes in 0.01 intervals. So, now the waves are perfectly tuned at 0.66seconds. The second major software change was related to the AI light. The Profilux offers a storm mode that flashes the LED system as in a thunderstorm. However, it was lame. You could select days of the week and the time you wanted the storm. So, I had storms at 2pm on three days of the week. Like nature really works like that. So, I argued that storms should occur at random times with random durations. Viola, I don't know if it was me (doubtful) but they offered a fix for it. Now, storms are available at random times and durations and you select how frequently they occur. So, storms may even occur in the middle of the night, when no one is around to see it.
I go on this tangent to demonstrate what you really get when you pay more. I have never recieved this level of customer support before on any product in the hobby. These two companies excel in customer service. Tunze is very good too, but they never offered software upgrades for my complaints on thier product limitations. Profilux and AI listen to thier customers.