My tank's temp at day is at 80-82F rarely at 85F and in the morning is at 80-78F is that ok for adding frags to it?? 'cus i dont have a chiller and im just crazy to put some frags in to my tank.
steady temps are key you really want to try to back the temp down a bit to like 75-78 if you can as long as there are no swings to speak of you should be ok to add a frag or two
I have to agree that you really want to keep the temp swings alot tighter, maybe to a degree or so. You can try using a small fan blowing acrossed the tank when the lights are on to help keep the temp from rising. Get the temps stable and the corals will be happier.