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#1
02-22-2008, 08:14 PM
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mseepman, I am at a loss to offer an explanation.
There is no mechanics that I can think of that would allow Ca/Alk to go UP beyond the levels of the replacement SW in any system that is supporting SPS and coraline algae. I don't think that fish or overall bioload are a factor as they don't pull Ca from the water.
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400 gal reef. Established April, 2007. 3 Sequence Dart, RM12-4 skimmer, 2 x OM4Ways, Yellow Tang, Maroon Clown (pair), Blonde Naso Tang, Vlamingi Tang, Foxface Rabbit, Unicorn Tang, 2 Pakistani Butterflies and a few coral gobies My Tank: http://www.canreef.com/vbulletin/showthread.php?t=28436 
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#2
02-22-2008, 09:57 PM
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In order to try and bring things back into line, I am doing a 20% water change this weekend. I did a 20% last week as well but it didn't seem to do much.
Without having my own RO/DI, big water changes are a real pain in the butt!
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Mark...  290g Peninsula Display, 425g total volume. Setup Jan 2013.
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#3
02-23-2008, 02:07 AM
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I do...have you checked for a faulty test kit. What test kit are you using..A lot of problems with Salifert as of late, could be your alk or Ca test kit.
Quote:
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-=Bryan=-
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#4
02-23-2008, 05:35 AM
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I thought the same thing...but I have a Hagan test kit and the Salifert and both read similar. I bought the Salifert kit after getting these readings from the Hagen kit. I have a friend with a red sea kit (ugly I know) but I will have him do a test and see if he confirms.
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Mark... 290g Peninsula Display, 425g total volume. Setup Jan 2013.
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#5
02-25-2008, 09:45 AM
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Test the RO water you are buying for Ca, not being run through a DI filter I'd bet it contains Ca.
As mentioned by Scumchug, you are then adding Ca everytime you top up your tank and slowly increasing Ca levels.
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-captainhemo
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