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Old 08-10-2012, 06:31 PM   #31
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Coralife salt usually mixes to around 560 calcium so what you are seeing isn't far off from what should be expected.
Synthetic Salt Mixes - Reef Central Online Community

I would definitely calibrate the pH meter. I highly doubt your pH is 8.8.
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Old 08-10-2012, 07:28 PM   #32
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Wow, I didn't know it mixed that high. Reef crystals seems to come in about 420-450. But these titration style test kits are prone to being off. I finally ordered a Hanna. Still titration based, but I think it should work better. Their phosphate meter is great. And yes, the PH is not sounding right.
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Old 08-10-2012, 08:08 PM   #33
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Quote:
Originally Posted by ccCapt
Coralife salt usually mixes to around 560 calcium so what you are seeing isn't far off from what should be expected.
Synthetic Salt Mixes - Reef Central Online Community

I would definitely calibrate the pH meter. I highly doubt your pH is 8.8.
Wow! I would say change your saltmix. Any clue what the previous tank owner used for mix? Ph does not sound right like stated. 8.8 off charts
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Old 08-11-2012, 05:33 PM   #34
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Ok, so I tested a mixed batch of saltwater. Here are the parameters:

pH 8.61
Cal 630
Sal 1.026

My tank is at

pH 8.74
Cal 600
Sal 1.026

So I guess my mix is just high in calcium. The real question is why is it not being used up more seeing as I am not dosing calcium. This leads me back to the magnesium issue. I still have not tested for that so I still have more things to look into. I am going to take some sample to the lfs for testing as well.
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Old 08-11-2012, 05:47 PM   #35
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It takes a large amount of stony corals to make a significant impact on calcium levels.
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Old 08-11-2012, 05:59 PM   #36
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Quote:
Originally Posted by bioteacher
Ok, so I tested a mixed batch of saltwater. Here are the parameters:

pH 8.61
Cal 630
Sal 1.026

My tank is at

pH 8.74
Cal 600
Sal 1.026

So I guess my mix is just high in calcium. The real question is why is it not being used up more seeing as I am not dosing calcium. This leads me back to the magnesium issue. I still have not tested for that so I still have more things to look into. I am going to take some sample to the lfs for testing as well.
It sure does take a lot of hard coral to matter. But I am still not believing those PH readings. With readings like that calcium dosing would be a waste of time. Alkalinity though is important to keep up.
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Old 08-11-2012, 06:02 PM   #37
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Quote:
Originally Posted by Gregcoyote

It sure does take a lot of hard coral to matter. But I am still not believing those PH readings. With readings like that calcium dosing would be a waste of time. Alkalinity though is important to keep up.
Y would it be a waist others then the fact that the ph is high
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Old 08-11-2012, 06:08 PM   #38
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Quote:
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Y would it be a waist others then the fact that the ph is high
What? Spell checker dude.
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Old 08-12-2012, 02:28 PM   #39
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Quote:
Originally Posted by Gregcoyote

What? Spell checker dude.
How would dosing calcium be a waste of time when the ph is that high
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Old 08-12-2012, 02:50 PM   #40
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Quote:
Originally Posted by Madreefer420

How would dosing calcium be a waste of time when the ph is that high
I may be wrong but I think that calcium precipitates out of solution when pH is too high. I think that threshold is at a pH that is above 9. He might also be saying that it is not worth worrying about calcium because a pH that high is more detrimental than the calcium would be.
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