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Old 12-19-2006, 02:24 PM   #11
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Nice catch rubikcube. I assumed dKh. I guess because that is what I measure in and that's an average reading for dKh.
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Old 12-20-2006, 11:39 AM   #12
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I don't have plans to add anything till i can get the water set. I wonder if it was the ammonia that I used to cycle the tank - hydroxide variety, but with no additives. The other thing that has me puzzled is that my phospate level is at 2.3. I've only used distilled and ro water and the salt mix was Instant Ocean.

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Old 12-20-2006, 01:55 PM   #13
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You might try an alkalinity test on a fresh batch of saltwater. The ammonia wouldn't cause an alkalinity or phosphate reading like that. If the only thing you have added is the water, then I'd check that first.
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Old 12-21-2006, 02:04 AM   #14
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I was able to perform a phosphate test and found that my RO water had more albeit in miniscule amounts, phosphate. However, it was still registering less then 0.15 or less. The seawater registered even less and I assume it is because of the buffers in the salt. My tank is still coming in at a whopping 1.0 - 1.5. Could the substrate (crushed aragonite) cause a higher phosphate level?

I didn't have time to do the alkalinity test - that will be next.
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Old 12-21-2006, 10:54 AM   #15
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The phosphate numbers don't make much sense to me. Are you using the seachem test?
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Old 12-21-2006, 11:10 AM   #16
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Yes - the lfs uses them and they came highly recmended and a cheaper alternative to Salifert that uses similar technology.

It comes with a reference so I could use that to see if the kit is off
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Old 12-24-2006, 06:51 PM   #17
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First of all, what kind of RO/DI are you using, and have you tested it with a TDS meter?
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