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Old 01/02/2008, 03:09 PM
j.prostrata j.prostrata is offline
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Join Date: Jan 2007
Posts: 167
Jason, did you calibrate your refractometer with 53mu to 35ppt? I have seen a few times latley where peoples slope was off using pure ro/di. Friends tank tested 1.025 using ro/di and he was having problems. Tested the refrac with 53mu and he was really at 1.031. Prob not your cause but always worth checking out. Also whats Mg at?

Peace