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|   I used to use a 100 micron one, i did have to clean it every 3 days. I don't have any at the moment. I put it in once in a while when the water gets a little cloudy. | 
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			#2  
			
			
			
			
			
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|   100 micron as well. I've got about 2000gph going through mine and have to change them out every two or three days. 
				__________________ "We shall dive down through black abysses... and in that lair of the Deep Ones we shall dwell amidst wonder and glory forever." - H.P. Lovecraft Old 120gal Tank Journal New 225gal Tank Journal May 2010 TOTM The 10th Annual Prince George Reef Tank Tour |