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Old 06-10-2012, 09:51 PM   #1
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Calcium low

I started dosing two part. Before that I was using kalk in my ato. Cal was staying at 460 and alk stayed at 8. After I started using two part, and brought up alk to 10 my cal is staying very low. At around 368-380. I have bumped up the timers on the cal by 10 min each time, but cal will not come up. I am using ****** API test kit, but it worked before and I would think I would see some rise on the test. Any thoughts?
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Old 06-13-2012, 11:04 AM   #2
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Anyone?
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Old 06-13-2012, 02:03 PM   #3
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Your calcium won't go up until your alk goes down. They move together. Do a water change and cut down on the kalk since it is raising your alk to 10. Your calcium will go back up.
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Old 06-13-2012, 09:05 PM   #4
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What exactly are you using to dose calcium? If you are using a dry calcium chloride, how much of it are you adding to what volume of water? How much are you dosing each day?
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Your calcium won't go up until your alk goes down. They move together. Do a water change and cut down on the kalk since it is raising your alk to 10. Your calcium will go back up.
That makes no sense. What makes you think you can't raise calcium if alk is 10 dKH?
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Old 06-13-2012, 10:09 PM   #5
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Im not sure why i said that in hindsight. Sorry for spreading bad advise.
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Old 06-13-2012, 10:39 PM   #6
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I am using brs recipe 1 two part solution. The tank is 90 gals. I am dosing about 110ml of cal aday, and 93ml of alk.
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Old 06-14-2012, 05:28 AM   #7
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MAGNESIUM!!

Wow, there i got it out. Get yourself a mag test kit asap. Never dose any calcium/alk supplement without test mag. All 3 are interconnected. If your mag is low you never be able to raise your calcium and you will overdose.

This problem is one of the leading causes of people overdosing. Calcium cannot raise with insufficient magnesium levels.
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Old 06-14-2012, 07:45 AM   #8
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Magnesium is at 1300. Little low but not bad... I'm wondering if I am dosing the right amount, because the cal is staying at 380 an not going down. I am going to bring it up to 420 then see if the dosing pumps will keep it there. What do y'all think?
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Old 06-14-2012, 08:34 AM   #9
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A Simplified Guide to the Relationship Between Calcium, Alkalinity, Magnesium and pH by Randy Holmes-Farley - Reefkeeping.com

This might help.
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Old 06-14-2012, 08:53 AM   #10
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How much of the dry calcium chloride are you adding to how much water?
The proper mixture should be aprox 2 cups of calcium chloride to 1 gal of water. Then, if you mixed it at that ratio, a 50ml dose in a 90g system will push calcium from 380 to 420.
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