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Old 02-25-2009, 06:30 PM   #1
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Chemistry question...Help

Hi all,
I've just gone to mix up my water change ready for saturday, but unfortunatly my spare heater that I use has cracked:-(

Now...I know temp effects SG, but is there a conversion table available on the interweb. This way, I could get on and mix my water, then buy a heater at the weekend ready for the water to be warmed just prior to being added to my tank.

Hope that makes sense

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Old 02-25-2009, 07:32 PM   #2
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Here's a link to a page that may help. His data is only good for temperatures between 23-30 degrees C. But if you can get your water temp close to 23 degrees C you should be able to get close and add the last bit of salt once you get your water to temperature this weekend.

Temperature Corrections for Hydrometers by Randy Holmes-Farley - Reefkeeping.com

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Old 02-25-2009, 07:39 PM   #3
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Furthermore Randy states that if you use a swing arm hydrometer temperature won't make a noticeable impact on salinity.

"swing arm hydrometers do not usually require any corrections for temperature effects over the range normally used by aquarists"

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Old 02-25-2009, 07:57 PM   #4
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Thanks. That was really useful.
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Old 02-25-2009, 08:31 PM   #5
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Glad to help.

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