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Old 01-21-2015, 02:10 PM   #1
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Water params problem

Hi, I recently tested my water. I didn't made a WC for 2 months in my reef, but I keep dosing NOPOX and running GFO to keep nitrates/phosphates unreadable.

I just noticed my chemistry seems not ok...

Alk: 5 dKH
Ca: 390ppm
Mg: 1200ppm...
PH: Seems ok at 7.8 - 7.9

Should I raise them all ?

I already prepared 3 separates 1gal of topoff RODI water. I mixed calcium in one bottle, mg in the other, and alk in the last one. I calculated with a weight scale the required amount of each needed to bring params to:

Alk: 12dKH
Ca: 440ppm
Mg: 1320ppm


Is it ok to make that change in an interval of 1.5 weeks ? (2 gal of evaporation on my 20g per week).
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Old 01-21-2015, 03:28 PM   #2
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I have a hard time believing that alk reading. Try testing again.
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Old 01-21-2015, 03:47 PM   #3
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Quote:
Originally Posted by Sniperhank View Post
I have a hard time believing that alk reading. Try testing again.
Tested it twice already.. same readings... The first shot I didn't believed...
Via RedSea test kit.

I added some Seachem Reef Carbonate (Seachem. Reef Carbonate)

Retested, water raised to 6dKH. Corals seems healty, except my pagoda with GHA growing on it...
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Old 01-21-2015, 03:50 PM   #4
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Yes, that's plenty of time to raise it, but yes, 5dkh should have been killing stuff. Is that what you are seeing?
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Old 01-21-2015, 03:51 PM   #5
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I have 3 jar of 1g of RODI water with chemicals...

The first one: Seachem. Reef Buffer
Just enough to raise alk to 11-12 dKH.

The second: Seachem. Reef Advantage Magnesium
Enough to add 120ppm to 80L of water (20g).

The third: Kent Marine » Turbo-Calcium | Products
A half teaspoon, there's no weight mesurement on the product.
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Old 01-21-2015, 03:53 PM   #6
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Yes, that's plenty of time to raise it, but yes, 5dkh should have been killing stuff. Is that what you are seeing?

What I see is a LOT of GHA growing on my freshly bleached LR, even if NO3 and PO4 are unreadable (PO4<0.03, NO3<0.2).

Also my big polyp pagoda is not going well. My birdsnest grow very fast...
I lost a snail recently...
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Old 01-21-2015, 03:58 PM   #7
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Why do you wish to raise your alk to 12? I would bring it up to around 8 and leave it there.
How about just doing a few large water changes to correct parameters? The reef buffer is a ph buffer isn't it? I would use the soda ash to raise the alk if need be.
Bryopsis can be controlled with Kent Tech-M. Google "controlling bryopsis with kent tech-m".
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Old 01-21-2015, 04:00 PM   #8
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+1 for water changes


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Old 01-21-2015, 04:02 PM   #9
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K I'll try ajust params, then do a 25% water change. I know my salts are well balanced.

I'll get rid of 1/4 Topoff alk water, so I get 9-10 dKH
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Old 01-21-2015, 04:05 PM   #10
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The important thing is keeping it stable. If you are saying your water changes aren't keeping alk up, then I would suggest looking into a pair of dosing pumps, or adding soda ash on a daily basis. BRS has some good products that are affordable as well as some good instructional videos.
Water changes will also help with the algae.
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