How long are your tank lights on???

[Mappelbaum37]

the title says it all- I have a red slime algae problem and I spoke to someone at my LFS and all of the sudden it just hit me. I used red slime remover on my tank yesterday and the guy told me that it really is the worst thing for the tank because it takes away good bacteria and nutrients and the slime is going to just keep on coming back. He told me to cut back on light and feeding and during water changes siphon out as much slime as I can. Many people on reefcentral had told me to be careful about chemicals but I didnt listen- My corals and fish are fine but I guess I just had to literally hear it from someone. =)

So anyways, how long are your tank lights on (if you have corals and fish, because I have a mixed reef)