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#1
12-27-2008, 07:59 PM
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correct me if im wrong as i dont have a refracto and i have used a friends to find out my hydro is out .0015 aprox. but are you not supposed to use distilled water to zero in a refracto?????/
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72 Gallon Bowfront Reef.. Hardware:2x250w Luminex Elite HQI Reflectors (Phoenix Hexarc Bulbs), Galaxy 2x250w Electronic ballast, Euroreef 130 Skimmer, Sedra KSP 7000 Retern... Live Stock: Pair of Hawaiian Flame Wrasse, Leopard Wrasse, Pink Streaked Wrasse, Pair True Percula Clowns, Potters Angel, African Flameback Angel, Orange Fin Tomini Tang, Yellow Assessor, Tailspot Blenny, Purple Firefish.. 45 G FW Asain Barb Community tank. 
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#2
12-27-2008, 08:38 PM
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Quote:
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One more fish should be ok?, right!!!  - Laurie
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#3
12-27-2008, 08:45 PM
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hdro vs refractometer
yes you can use ro water to calibrate remember ro water is at 0 so look in your refractometer if its not at zero adjust the screw to bring it to 0 been doing for 10 years.dan
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#4
12-27-2008, 08:49 PM
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hydro vs refractometer
we suggest in the future have the store where you buy your refractometer calibrate it for you hope this helps.dan
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#5
12-27-2008, 09:24 PM
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Your refracto should have come with calibration fluid, I got mine at Red Coral too, same one, and mine came with it.
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180G Office Reef. Started Sept 2012 http://www.canreef.com/vbulletin/showthread.php?t=88894 62G Starfire Reef. Started Jan 2013 http://www.canreef.com/vbulletin/showthread.php?t=89988
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#6
12-27-2008, 09:40 PM
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I've got the Sybon refractometer it came with a bottle of ultra pure water for calibration (water-- 0% anything +/- o.o1ppt) It's actually called "ultrapurewater"!
It seems to do the trick, although I've never tested it against anything else
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#7
12-27-2008, 10:32 PM
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Yes, I used the "ultrapure" water to check the calibration and it was right on the money. So, if that (0.0129) is an acurate reading, which I think it is, then I will do some slow changes to the water.
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Rebuilding.... Concept Custom 50gal 24x24x20, herbie overflow, Radion g2, 20 gal sump, Bubble Magus NAC 7, MP10 WES, Speedwave 1320 return.
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#9
12-28-2008, 01:45 PM
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I have both, but haven't used the hydrometer in about 3 years. I always use the refractometer and will continue to do so. But a question comes to mind....if the error of a hydrometer is known, could the hydrometer not still be used and just simply apply the error in calculating the true reading?...or is an error in a hydrometer prone to fluctuate? (This is assuming the instrument is cleaned thoroughly after each use).
Cheers,
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Mark.
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