80 watts would be too much. I think the usual rule of thumb is 4-7watts per gallon. Star polyps really don't need much light, in the world of coral. And wattage isn't always accurate, it's also the intensity of light... 40w pc
lighting is IMO
much brighter than 40w regular flourescent. One 40 for a 10g should be good for star polyps, mushrooms, maybe some kinds of leathers or colt corals. I use current usa satellites. Orbits are a bit higher end, they have more moonlights, sleeker design, but basically that's the main difference. Besides the price. You can actually burn your coral by increasing light too much too fast.