Simple salinity meter

[Stickboy97]

Is there a simple salinity meter out there? One that I can put a probe in the water and it'll give me a constant reading? Or do I have to buy a controller for that? I have a 75g tank and don't want to spend a fortune on it. I just started buying corals and I'm keeping it simple (mushrooms, zoas, anemone). I'd like to be able to look at a digital read out on the side of my tank and see what the salinity is, kind of like my digital thermometer.
Thanks
Shane

 

[cobra9]

http://premiumaquatics.com/aquatic-supplies/PIN-SAL.html

But personally I just use This and check it once a week.

 

[Flaring Afro]

Won't the salt start to build on the probe causing it to read high? That's why in-tank hydrometers don't work. Well, that and the flow affecting it... and it being a hydrometer.

 

[Stickboy97]

I see refractometers on ebay, are they any good?

 

[Flaring Afro]

I see refractometers on ebay, are they any good?

I bought one that looks like this. Not sure if it was the same seller or exact model but I'm sure it works.

http://cgi.ebay.com/Salinity-Refractometer-0-10-Salt-Water-Marine-Aquarium-/230614629329?pt=LH_DefaultDomain_0&hash=item35b1b3fbd1

I've heard good of it from people on forums.

 

[Stickboy97]

That's the one I was looking at as well. Not too expensive, and if it doesn't work, it won't be much of a loss.