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Old 02-24-2005, 09:45 AM   #1
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first time testing alk, calcium - results

I tested KH/alk & calcium for the first time today. What do these results mean for me?

KH: 11.2
Alk: 4.00
Calcium: 310
pH: 8.0

I'm looking to get this tank up to reef standards. I have a bottle of "Reef Advantage Calcium by Seachem" that I can add to bring up the calcium, but thought I'd check in here first to get the lowdown on these results. Thanks.

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Old 02-24-2005, 10:07 AM   #2
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All you ever wanted to know about Alk Ca:

I would suggest a two part calcium/alk additive. Personally I use Bi-Ionic and am very happy with the results and ease of use.

Acronyms and Abbreviations
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Old 02-24-2005, 10:34 AM   #3
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What kind of calcium is Reef Advantage Calcium by Seachem? s this calcium carbonate, calcium chloride, or something else? The label doesn't really seem to say. It does say this:

Reef Advantage Calcium is a non-caustic optimized blend of ionic calcium designed to...

I have low calcium and high alk, so it is my understanding from the article linked above that I don't want to add calcium carbonate.
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Old 02-24-2005, 11:22 AM   #4
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Reef Advantage Calcium is calcium chloride product with a few extra's thrown in. This will help raise the Ca levels in your tank. Calcium carbonate is not an additive. It's what carbonate/bicarbonates (reef buffer) form when incorporating calcium within the system or deposited by CaCO3 organisms or through abiotic precip usually as a result of heat.

FWIW, if using a properly balanced saltmix, that is usually the best means of bring the waters chem back into ionic balance through repeated water changes. Then maintenance is going to be much easier. As Billyz suggested, two part liquid additives are typically easier to use over the long run unless you have heavy depletion.

What levels (alk/Ca) does your saltmix test at?

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