The sunup/down on the AI controller is just that % up and down. With the GHL you can adjust the % for up and down for varying amounts of time.
I am running the IIeX, when my upgrade kit arrives I will be running the IIIeX.
The others that will work with the AI light, but cost a lot less are the II ($300) and Light II ($283), you cannot upgrade these models.
Last edited by wesheltonj; Thu, 21st Jan 2010 at 08:47 PM.
wesheltonj
90g Oceanic Reef-Ready Bowfront w/ AquaIllumination LED & GHL Profilux 3eX