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					Originally Posted by  sphelps
					 
				 
				So you wait 6 months, then do a water change, then all of a sudden clams start acting up. Stability sounds like an issue unless there's something else you've forgotten about? 
			
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 no. i wait 6 months, clams start acting up. i do a 10 gallon water change. no change except at night (which was happening before and after the minor waterchange)