General Discussion - Calibrated thermometer

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Calibrated thermometer

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Forum Name: General Discussion
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URL: http://www.utahreefs.com/forum/forum_posts.asp?TID=23873
Printed Date: September 25 2025 at 4:23am
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Topic: Calibrated thermometer

Posted By: jpiotrowski
Subject: Calibrated thermometer
Date Posted: February 20 2008 at 11:02am

Has anyone had to re-calibrated their neptune thermometer? I just discovered that mine was 6.5F off. If that is true for my 'high temp' then: 81.5 F (reading) = 87F (actual) and current 75F = 81.5F

That equals ouch. If this holds out I think I know why my tank looks like crap!

Replies:

Posted By: Snowsrfr
Date Posted: February 20 2008 at 12:09pm

I had to recalibrate mine about 6 months after I got my AC Jr. I used my digital thermometer from my nano, and adjusted from there. Mine was about 3.5 degrees off when I re-calibrated.

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"A fish tank is not a pet. It's a TV that you gotta feed." - John Caparulo

Posted By: jonafriendj
Date Posted: February 20 2008 at 12:55pm

I used 2 of those digital thermometers to calibrate my acjr. But... one ended up being higher than the acjr and one ended up being lower so I just left it! Supposedly the digital ones everyone has aren't very accurate but the floaty glass ones are supposed to be.

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Pleasant Grove

Posted By: jpiotrowski
Date Posted: February 20 2008 at 1:00pm

I took a second reading with the 'calibrated' digital and it was reading 1 degree C high. But still I am looking at 4-5 degrees F off.

Posted By: Dion Richins
Date Posted: February 20 2008 at 4:06pm

Those digital ones suck. Ive got 4 of them and they all read different. 6 degrees form the high to the low. I bought a spa thermometer to set my Neptune by. The Neptune was 4 degrees off and the expansion module was 5 degrees off.

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