Ok I lied, there are more questions, during cycling period is it necessary to turn the light on in the tank, if so fow how long? after cycling period is over how long do the light need to be on a day? and also does the moon light on the tanks do anything or is it just for show, if it does serve a purpose how long does it need to be on? and lasty (LOL) do you guys add any chemicals to your water, I normaly buy salt water (supposed to be directly from the ocean according to the aquarium) but I have read some places talking about adding: "calcium, strontium, iodine, and trace elements" to the water. Thanks again