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Old 09-11-2009, 07:03 PM   #1
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Question How do I raise the calcium correctly

I need to raise the Calcium level in my tank, currently Calcium 340-360 with the DKH at 11 and PH=8.3. I want bring the calcium up to 450 without the use of a reactor and without my alkalinity dropping thru floor and with little or no effect on my PH. How can I accomplish this?
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Old 09-12-2009, 07:54 AM   #2
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Buy calcium chloride. Either Kent Turbo Calcium or much cheaper and the same thing is calcium chloride from Bulk Reef Supply.
Then use this Reef Chemistry Calculator to figure out how much you need to dose.
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Old 09-12-2009, 08:18 AM   #3
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Thanks for the info but what do I do with the alkalinity?
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Old 09-12-2009, 09:12 AM   #4
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If you are starting to get enough coral in that tank where ca and alk are becoming a problem, you may want to consider a two part system.

Bulk Reef Supply - Bulk Reef Supply

That is a very easy way to start out.
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Old 09-12-2009, 09:18 AM   #5
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Quote:
Originally Posted by InfernoST View Post
Thanks for the info but what do I do with the alkalinity?
Just buy Arm & Hammer baking soda if you need to raise alk. Use the same calculator I linked to above.
This is a "must read" article if you need to dose ca/alk/mag and want to save yourself some $$$$.
An Improved Do-it-Yourself Two-Part Calcium and Alkalinity Supplement System by Randy Holmes-Farley - Reefkeeping.com
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Old 09-12-2009, 10:47 AM   #6
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Thanks Guys. I'll check out both options.
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Old 09-18-2009, 05:16 PM   #7
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Bumping up the Calcium the amount you're talking about shouldn't drop the calcium "through the floor". It'll probably be lower, but I bet once you get it where you want it your alkalinity will still be OK since you're sitting at 11 now.
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Old 09-18-2009, 08:27 PM   #8
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Bumping up the Calcium the amount you're talking about shouldn't drop the calcium "through the floor". It'll probably be lower, but I bet once you get it where you want it your alkalinity will still be OK since you're sitting at 11 now.
I just started making the transition to reef crystals from IO. I did start dosing calcium and the alk dropped to 8 in three days so i picked up a B-ionic 2 part and that brought both up nicely without affecting the PH, which brought the calc up to 400 and the alk up to 10. I stopped the two part because I did a 30% pwc with 50% RC and 50% IO, now the calc is 440 and the alk 11 with ph at 8.3.
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Old 09-18-2009, 08:56 PM   #9
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What was the Ca and Alk of the RC salt mix out of the box?
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Old 09-19-2009, 04:23 AM   #10
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Alk of 8 is no big deal. I run around 420/8 and everything seems happy.
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