If you aren't using the archon analog ports you can use the 4 of them for two if your lights. Then add a single ALC to get the 3rd under control. However if you aren't as intent on controlling all 6 channels independently you can say run all the whites in 1 dimmer circuit and then all the blues on another.
For example, I hacked into my reef radiance lumentek pro.it has three channels. I use three of the analog dimming channels to control it. Lmk if I can help in any way on the dimming of them. Do you know if they are analog or pwm?
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