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Old 01/08/2008, 10:39 PM
Mchava Mchava is offline
location: santa ana, CA
 
Join Date: Mar 2004
Location: Santa Ana CA
Posts: 3,231
i tend to keep mine at about .02-.04. I use rowaphos and change it every two weeks. If i go any lower then that my corals tend to lighten up. So I keep it at that. Oh and if I recall the hanna will never read 0.00 it will only go as low as .01 from what the manual says.
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