Ok Folks, for clarity, the Ballasts used in Max aquariums are not dimmable, in the Max 130 range 130/D ? C there is a single twin ballast, on the Max 250 & C models we have 3 x twin 39watt ballast powered so that all 3 ballasts fire at the same time, comprehensive re wiring would be required to alter the lighting sequence. with the S Series there are 3 separate light fittings, again all with twin ballasts so we have 2 x 4 lamps and 1 x 2 Lamps, The S series lighting units all have separate power supplies so these could be run on a controller system but only by means of switching on the separate units at different times.
Hope this helps.