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Old 03-24-2014, 04:14 AM   #11
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Are you dosing calcium? Your calc level is kinda high and that will cause Alk to lower unless you also raise mag.
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Old 03-24-2014, 08:20 AM   #12
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Surface water agitation: I do have a HOB running Purigen, so the water is being agitated by the return there.

I am not dosing calcium. However, I am adding Prodibio BiOptim and BioDigest bi-weekly.

My calcium pre-change last night was 432. I will do a Ca, KH, and Mg test tonight to see how they track. The last Mg test I did was at 1560 (Salifert). This was about 2 weeks ago.

Re: corals- Duncans, frogspawn, torch, zoas, acans.
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Old 03-24-2014, 09:46 AM   #13
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Low alk in my nano

Just curious but does it say on the container what levels reef crystals mixes at? That stony load shouldn't be using up calc and alk that fast
Edit: you could probably stop with the additives too, your salt should have everything you need right now
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Old 03-24-2014, 09:49 AM   #14
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According to http://www.thatpetplace.com/reef-cry...l-pro-size-box

Approx. content analysis, with salt mixed to 35 ppt or a specific gravity of 1.026:

Calcium, 490 ppm
Alkalinity, 13 dKH
Magnesium, 1440 ppm.
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Old 03-24-2014, 09:51 AM   #15
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I will test some mixed/aerated water as well as the tank water tonight. Although, the fresh mixed stuff last night (after aerating for 12hrs) was only at 8.9.
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Old 03-24-2014, 10:25 AM   #16
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Also, and I'm pretty sure I know the answer to this already, "we" should put more stock in the Hanna results than the API results, I'm guessing. Have others checked the accuracy of the Hanna results as compared to others?

I'd rather not buy a 3rd test kit as a tie breaker, but...
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Old 03-24-2014, 02:06 PM   #17
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Just so know having too high of mag can also result to imbalance of Kh and Cal. Try not to exceed to 1350
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Old 03-24-2014, 02:29 PM   #18
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My Mg was sky high the last I checked it, but I don't know why it would be, as I'm not dosing anything.
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Old 03-24-2014, 02:41 PM   #19
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Wow, according to Coral Pro Salt is ideal for sustainable, accelerated coral growth. , they've got a *lot* of Mg in the mix. I was using that before switch to Reef Crystals. I still have about 3/4 bucket of the Coral Pro left, too. I might have to alternate between the two brands on a week by week basis...
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Old 03-24-2014, 03:19 PM   #20
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I've used rscp for years and love it, I don't remember what the mag mixes at but I can test it when I get home I have to do a wc on one of the tanks tonight so I've got some mixing.
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