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Discussion Starter #1
I know this has been discussed here before, but I just wanted to say how innacuate swing arm hydrometers are!! Yesterday my RHS-10 ATC refractometer came in :blob: (the same as this http://fishtanksdirect.com/index.asp?PageAction=VIEWPROD&ProdID=9 )
and I checked my tank, WOW was my salinity ever off! My SG was 1.030!!!!! :mad: With my L-cheapo swing arm hydrometer my SG read 1.025, which is what I alway try to keep it at. Wow was it ever off! Maybe this is why my clam always looked mad at me?!? :confused:
So for everyone who has a swing arm hydrometer, please buy or borrow a refractometer just to see where your at so you don't stress out your fish, corals, and friends.
Happy Reefing!! :beer:
 

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Discussion Starter #3
Hmm, beer. I have a floating hydrometer for wine making, but never used it for my tank. I suppose it work be alot more accurate. I was able to get in on a group buy of them, so it wasnt too expensive. Here is the link if anyone is still interested, rdbesigns did the group buy and he has a couple left for $37 shipped to your door.
http://www.nano-reef.com/forums/index.php?showtopic=92092
P.S. I am not soliciting this for him, just an FYI for anyone who may be interested in a great product for a great price.
http://www.nano-reef.com/forums/index.php?showtopic=92092
 

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No frags for you!
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I actually bought the same one off ebay about 3 weeks ago. I have to say that I love it too. I got hooked when taking care of Sean's tank while he was on vacation.

Well worth the money IMO!
 

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refractometers are nice but you need to keep up with the calibration

if you use a swing arm i would rinse it in ro/di after each use, or tap in a pinch...salt and hard water deposits can change their accuracy. vinegar soaks on a regular basis are also a good idea.

with a floating hydrometer make sure there are no currents, and that its away from the tank wall. also be sure to read at the bottom of the meniscus.

i rarely use my refractometer now, my swing arms are accurate to within a a thousandth sg and they are more convenient if you ask me. if something is out of wack or i'm making a big change i'll break out the refractometer.

tg
 

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Land Shark
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Twins Guy said:
i rarely use my refractometer now, my swing arms are accurate to within a a thousandth sg and they are more convenient if you ask me. if something is out of wack or i'm making a big change i'll break out the refractometer.
ditto
 

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I was hoping to get a refractometer to use for homebrewing and the aquarium, but couldn't find one with the right range and accuracy for a good price. I was using the fancy one we have at work, but have avoided using it since my boss had it dissembled for "calibration".
 
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