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Old 01-31-2015, 07:28 PM   #11
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I have the additives from BRS, the alk, mag, and calcium. I've never even opened the mag and calcium boxes, let alone mixed it up to dose like I have for alk.
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Old 01-31-2015, 07:32 PM   #12
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BRS two-part dosing question

The problem is that cal and alk effect each other. For most systems the common solution was to ignore that fact and dose equally. There is no down side to adding more of one than the other, just watch your test parameters and dial it in over a few months. I pretty much ignore the cal and let it do its thing as I dose kalkwasser/vinegar and a tiny bit of calcium solution. I monitor the alk more closely and dose to keep it from 8-10.


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Old 01-31-2015, 09:54 PM   #13
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So, now, I'm even more confused. Will it hurt if I dose according to their consumption, which is 57ml for the alk and 82 for the ca each day?

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Old 01-31-2015, 09:55 PM   #14
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And if I dose the same, which value should I go by?

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Old 02-01-2015, 12:15 AM   #15
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If you haven't notice, when you dose one of the 3 elements (mag, alk or cal) the other tends to drop down with some proportion. Meaning the more amount you dose, the more the other will drop down. When you are dosing according to your measured daily consumption, it would mean you have to add a bit more of the other to compensate for that interaction. It's what we call the "balancing act". Manufacturers just over simplify their instruction and it is not followed by most including me. I even rarely dose cal just the ash. Just take note that it's not ideal to raise the 3. One of them has to give way for the other to go higher. Meaning if you want your cal high, you need to set your alk between 7 and 8 dkH.
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Old 02-01-2015, 09:56 AM   #16
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So, if I keep my alk at 8, and my tank still uses alk and ca, when do I add the ca? It is still being used up.

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Old 02-01-2015, 10:02 AM   #17
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My weekly water changes are enough to keep calcium (and mag) where it needs to be.
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Old 02-01-2015, 10:19 AM   #18
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Quote:
Originally Posted by boxxmann View Post
So, if I keep my alk at 8, and my tank still uses alk and ca, when do I add the ca? It is still being used up.

Remember, amateurs built the Ark and professionals built the Titanic.
If you are thirsty, when do you drink? It depends on your preference but as long as cal don't drop below 400 you are good. Edit: Just make sure before dosing cal, your mag must not be below 1300 otherwise precipitation will occur and you will have hard time raising cal. It is also important to raise any of them slowly.
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Old 02-03-2015, 06:19 PM   #19
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So now, I have one more question. Yesterday I tested my water and was as follows: Ca=395, Alk=7.0, Mg=1440. Today it was: Ca=410, Alk=6.4, Mg=1480. I tested at the same time both days. Can anyone explain this to me please?

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Old 02-03-2015, 06:49 PM   #20
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What tests are you using?

And for the record, being cheap and hurrying the project sunk the titanic. Time and good practice keeps others afloat.


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