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					Originally Posted by  Cal_stir
					 
				 
				your salinity seems a bit low, what is your alk?, diatoms thrive on silicates, did you use any base rock that might be leaching silicates? 
			
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 I just got a new Hanna Alk tester, I will test today and let you know after I test. Sorry I don't know the term base rock. If base rock is dry rock to start, then yes I did and yes it is probably producing silicates.