Originally Posted by Callen
Question of the day: What is the best rock arrangement for corals? Do I need to create a lot of flat/horizontal space? How close to the surface should my tallest rock be?
My rock got rearranged when I did my water change. I made sure the base was solidly down on the bottom of the tank.
Is it harmful for me to be reaching in there and rearranging things?
You will want flat areas as well as holes big enough for frag plugs. Height is a mix of personal aesthetic preference and lighting requirements of the corals you want as well as the lights you are running.
I reach into my tank all the time. Some swear by wearing gloves and others like me don't. Some local aquarists have had to be rushed to the emergency room. Though i believe it depends on what you have. Some corals such as zoas(i dont have/want) have toxins(palytoxin) that you want to avoid. Especially if you have open wounds on your hands/arms. There is also a chance of cutting your hand and arms on your rock work as well.
Edit: Look up coral toxins. And at all times use caution. When in doubt wear gloves. I've seen full arm length rubber gloves sold for the aquarium trade. You may want to buy a pair.