I have a 125g 6' tank and I have just upgraded my lighting from under 400 watts to 834watts including mh bulbs. Much brighter. My question is, I have some zoas and a feather duster that have closed up since the new light has been installed 2 days now. Are they just adjusting to the new light or is there a problem? The zoas are are near the bottom of the tank now and so is the duster. The tank is only about 3 months old so there are things that I was told not to add at this point which brings me to my other question. I realize you must cycle your tank and then you can begin to add things but what happens in the tank during the period between the tank being cycled and say a year to make the tank ready for not so hardy corals?