I was told a while back that you can never give CPs too much artificial light. Is this true? The reason I ask this is because recently I added another few light fixtures to my collection, so now over each of my 20 gallon tanks I have four 40 watt bulbs, bringing the grand total wattage to 160 watts per tank. I grow Nepenthes, sundews, butterworts, and sun pitchers in them and they seem to be changing colors as a result of the extra light. I know this is usually a good thing but I just want to make sure I'm not pummeling them all with too much light!