Chromis Posted October 11, 2002 Share Posted October 11, 2002 I am finally adding water to a tank I have been planning for at least 4 months now!!! Anyways, I am using a Tropic Marin Hydrometer which is caliberated at 77F degrees. My temp hasn't stablized and is currently at about 83F but I was curious how I adjust my target salinity to current tempature? My tempature will definately not remain 83F but I really doubt it will get down to 77F. Anyone have a chart or something? Link to comment
MrConclusion Posted October 11, 2002 Share Posted October 11, 2002 Hydrometer calibration depends on the specific model you're using. However, many are similar. If you're calibrated to 77 degrees but reading at 83 degrees, that's a 6 degree correction, which is probably on the shy side of 1 point. In other words, if you read 1.022 you probably have almost 1.023. Link to comment
Jefe12234 Posted October 11, 2002 Share Posted October 11, 2002 I use the chart toward the bottom of this article. http://www.animalnetwork.com/fish2/aqfm/19...s/1/default.asp -Chris Link to comment
MrConclusion Posted October 12, 2002 Share Posted October 12, 2002 Nice article, but it's not exactly the most straightforward temperature calibration table. So I went and dug mine out. Here are some numbers for my Cynmar triple-scale (approximate if you're applying this to different models.) Keep in mind that mine is calibrated true at 60 degrees, yours probably will vary. So transpose numbers as needed, and take the results with a grain of salt (HA HA HA!) 50 degrees - subtract 1/2 point 60 degrees - reads true 70 degrees - add 1 points 77 degrees - add 2 points 84 degrees - add 3 points 95 degrees - add 5 points 105 degrees - add 7 points Link to comment
cmoreash Posted October 12, 2002 Share Posted October 12, 2002 Ok, I'm scared of hydrometers now. Next plan: refractometer (btw, where can i get a decent one for cheep?) Link to comment
MrConclusion Posted October 12, 2002 Share Posted October 12, 2002 For a good refractometer go to www.cynmar.com Many refractometers are made for BRIX (dissolved sugar content) make sure you don't get one of those by mistake! (Unless you're using Sweet-Reef salt mix) Link to comment
Dave ESPI Posted October 12, 2002 Share Posted October 12, 2002 there are a lot of crappy refractometers on the market now..... BEWARE ! dont get a ######ty cheep one. I have some really good ones fer like 125.00 if ya want one. (retails fer like 180.00) I dont use them often... I have mixed enough water that I can just eyeball it, and do the "dip taste test" usualy im with in like .02 Link to comment
Chromis Posted October 12, 2002 Author Share Posted October 12, 2002 Dave! Did you get the PM I sent you a few days ago? Link to comment
Dave ESPI Posted October 12, 2002 Share Posted October 12, 2002 no, my box was full, sorry try again Link to comment
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