Has anyone used a D.E. filter on their tank before? I am plannign to do an indopacific reef, lots of filter feeders like sponges and carnation corals, well I am planning to dose feed at night, when the skimmer shuts off. well i want the water to be clear during the day so I want to get a D.E. filter to polish the water during the day and reduce the nutrients... let me know what ya think....