Currently I am running 4-160w VHO's, 1-400w MH and 1-250w MH on a 150 gal reef. Inhabitents: 4-clams, 1-green carpet, SPS corals (mostly millipora, porsillapora, many softies). My question is I am looking at decreasing my electric consumption by switching to 12- 39w T-5 lights. I know this will save energy, but what about my inhabitents? Can the clams survive? green carpet? Looking for some answers before proceeding.