Plate coral have a hard, dish looking plate, covered in corals tissue.

I don't have to worry about top-off, b/c my top-off are on an automatic floatswitch straight from the RO/DI. I do have nightmare about the switch failing and turning my saltwater tank into a freshwater tank. :o

Btwn Sleepless night and having to worry about topping off. I choose Sleepless night b/c I can always take sleeping pills. :roll: