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					Originally Posted by reef-keeper  It seems Tapa talk won’t show my full reply. Did I add more rocks? No. As for putting a foam on the air intake mine has a foam silencer on it all ready. I will wash the unit in vinager the set it in a Rubbermaid tub for a month to see if it will settle down. Any body else have input. All advice will be appreciated. | 
	
 I'd just use hot tapwater and a sponge/nylon brush.