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Old 05-15-2003, 10:35 PM   #1
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Consistent reading with a Deep Six

Still setting up a 55G FOwLR and have been having trouble getting consistent reading from my Deep Six. Is there some kind of trick to using this device? I would like to try to get three consistent reading before I would say that measurement is correct.

My procedure is this:
1) fill device slowly
2)set on table for couple of minutes
3) see that reading is way off (sometimes high sometimes low)
4) bang on it
5) usually levels off to somewhere near where I would expect but not with a consistent reading

I have never been able to get three consistent readings!
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Old 05-15-2003, 10:45 PM   #2
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Chances are there are very small air bubbles on the swing arm that are causing the problem. This is especially a problem with newer hydrometers. If it is within .001 between the three readings, I would say you are OK. You might also try soaking the hydrometer in FW for 24 hours.
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Old 05-15-2003, 10:55 PM   #3
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Did you mean to say freshwater Kevin? cause on the instructions it say it must be soaked in Saltwater for 24 hrs. And yes I think it's prob bubbles.
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Old 05-15-2003, 11:04 PM   #4
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LOL, I suppose it would be best to follow the instructions....
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Old 05-15-2003, 11:14 PM   #5
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You should rinse it out with freshwater after each use.

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Old 05-16-2003, 03:23 PM   #6
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I've seen the deep six hydros in the LFS but kinda balked at them really. Is there really a difference in the SG in the first six inches of the tank? I use a $2 dip SG to measure and never really seen a problem with my SG.

If there is a difference in the SG in the first few inches of water... what causes it? (just out of curiosity)
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Old 05-16-2003, 03:28 PM   #7
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It just means that it will work in as little as 6" of water.
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