The Cheato needs to float in the water. If all of the bio balls have been taken out you can float it in that compartment if not try to keep it away from your pump intake. The light you have is plenty strong enough, but if it's to big to fit over your sump you can use a compact flourescent flood light bulb found @ Home Depot or Lowes. http://www.melevsreef.com/fuge_bulb.html
Harvest the Cheato when it fills the compartment by ripping the clump in half and either giving it away or throwing it out.
Harvest the Cheato when it fills the compartment by ripping the clump in half and either giving it away or throwing it out.