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 It's not just the $$$ savings (which is nice of course) but I think the tank reacts better also. If I actually do the recommended dosage per volume for one day I will notice a slight film algae over everything the next day. 
				__________________-- Tony
 My next hobby will be flooding my basement while repeatedly banging my head against a brick wall and tearing up $100 bills.  Whee!
 
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