Specific Gravity

I would like to know where everyone runs their Specific Gravity at? I am
using a refractometer that is temperature compensated so am I correct to
believe this is an accurate reading of the true SG when the water sample is
tested?

TIA

Ken N.

"Ken" <kensn@com(delete)cast.net> wrote in message
news:82OIb.701720$HS4.5030569@attbi_s01...
> I would like to know where everyone runs their Specific Gravity at?


I asked the same question a few months ago and I was told for a reef you
should be at 1.026



>I am
> using a refractometer that is temperature compensated so am I correct to
> believe this is an accurate reading of the true SG when the water sample
is
> tested?
>


As far as your accuracy goes, I am not sure about it so I cant comment other
than it is supposed to be way better than using a hygrometer.


HTH

~Mort

Yes, 1.026 If your refractometer is calibrated, it will be very accurate. ATC
units can take up to 20 seconds to give the correct reading, but that really
isn't so long is it?

Hydrometers can be accurate at first, but later they can give faulty readings.
If the insert within the glass tube shifts up or down, it would be inaccurate.
Swing arm hydrometers can stick and give false readings as well. I've had all
three, and absolutely prefer the refractometer. It is a breeze to use.

Marc


Mort wrote:

> "Ken" <kensn@com(delete)cast.net> wrote in message
> news:82OIb.701720$HS4.5030569@attbi_s01...
> > I would like to know where everyone runs their Specific Gravity at?
>
> I asked the same question a few months ago and I was told for a reef you
> should be at 1.026
>
> >I am
> > using a refractometer that is temperature compensated so am I correct to
> > believe this is an accurate reading of the true SG when the water sample
> is
> > tested?
> >
>
> As far as your accuracy goes, I am not sure about it so I cant comment other
> than it is supposed to be way better than using a hygrometer.
>
> HTH
>
> ~Mort

--
Personal Page: http://www.sparklingfloorservice.com/oanda/index.html
Business Page: http://www.sparklingfloorservice.com
Marine Hobbyist: http://www.melevsreef.com

Thanks Marc and Mort,

I am running at 1.025 curently. I would sincerly like to thank all the kind
folks in this newsgroup for all the time they take to answer questions. The
information coming from people who have reefs is priceless.

Ken N.

PS
I will try to post some pics soon of my newly setup reef. All is doing
really good except for a little battle of hair algae that I am winning ! I
picked up a couple nice chucks of Colt coral at the LFS for $10 a piece that
were brought in for credit. The lighting and water conditions were not
sutiable for them and they looked rather bad. After a week in my tank they
perked up better than i ever expected and the polyps are fully extended.
Made my day to save them.


"Marc Levenson" <> wrote in message
news:...
> Yes, 1.026 If your refractometer is calibrated, it will be very accurate.
ATC
> units can take up to 20 seconds to give the correct reading, but that
really
> isn't so long is it?
>
> Hydrometers can be accurate at first, but later they can give faulty
readings.
> If the insert within the glass tube shifts up or down, it would be
inaccurate.
> Swing arm hydrometers can stick and give false readings as well. I've had
all
> three, and absolutely prefer the refractometer. It is a breeze to use.
>
> Marc
>
>
> Mort wrote:
>
> > "Ken" <kensn@com(delete)cast.net> wrote in message
> > news:82OIb.701720$HS4.5030569@attbi_s01...
> > > I would like to know where everyone runs their Specific Gravity at?
> >
> > I asked the same question a few months ago and I was told for a reef you
> > should be at 1.026
> >
> > >I am
> > > using a refractometer that is temperature compensated so am I correct
to
> > > believe this is an accurate reading of the true SG when the water
sample
> > is
> > > tested?
> > >
> >
> > As far as your accuracy goes, I am not sure about it so I cant comment
other
> > than it is supposed to be way better than using a hygrometer.
> >
> > HTH
> >
> > ~Mort
>
> --
> Personal Page: http://www.sparklingfloorservice.com/oanda/index.html
> Business Page: http://www.sparklingfloorservice.com
> Marine Hobbyist: http://www.melevsreef.com
>
>

Should read.... I hate when I don't spell check.......

I am running at 1.025 currently. I would sincerely like to thank all the
kind
folks in this newsgroup for all the time they take to answer questions. The
information coming from people who have reefs is priceless.

"Ken" <kensn@com(delete)cast.net> wrote in message
news:f5QIb.702917$HS4.5033354@attbi_s01...
> Thanks Marc and Mort,
>
> I am running at 1.025 curently. I would sincerly like to thank all the
kind
> folks in this newsgroup for all the time they take to answer questions.
The
> information coming from people who have reefs is priceless.
>
> Ken N.
>
> PS
> I will try to post some pics soon of my newly setup reef. All is doing
> really good except for a little battle of hair algae that I am winning ! I
> picked up a couple nice chucks of Colt coral at the LFS for $10 a piece
that
> were brought in for credit. The lighting and water conditions were not
> sutiable for them and they looked rather bad. After a week in my tank they
> perked up better than i ever expected and the polyps are fully extended.
> Made my day to save them.
>
>
> "Marc Levenson" <> wrote in message
> news:...
> > Yes, 1.026 If your refractometer is calibrated, it will be very
accurate.
> ATC
> > units can take up to 20 seconds to give the correct reading, but that
> really
> > isn't so long is it?
> >
> > Hydrometers can be accurate at first, but later they can give faulty
> readings.
> > If the insert within the glass tube shifts up or down, it would be
> inaccurate.
> > Swing arm hydrometers can stick and give false readings as well. I've
had
> all
> > three, and absolutely prefer the refractometer. It is a breeze to use.
> >
> > Marc
> >
> >
> > Mort wrote:
> >
> > > "Ken" <kensn@com(delete)cast.net> wrote in message
> > > news:82OIb.701720$HS4.5030569@attbi_s01...
> > > > I would like to know where everyone runs their Specific Gravity at?
> > >
> > > I asked the same question a few months ago and I was told for a reef
you
> > > should be at 1.026
> > >
> > > >I am
> > > > using a refractometer that is temperature compensated so am I
correct
> to
> > > > believe this is an accurate reading of the true SG when the water
> sample
> > > is
> > > > tested?
> > > >
> > >
> > > As far as your accuracy goes, I am not sure about it so I cant comment
> other
> > > than it is supposed to be way better than using a hygrometer.
> > >
> > > HTH
> > >
> > > ~Mort
> >
> > --
> > Personal Page: http://www.sparklingfloorservice.com/oanda/index.html
> > Business Page: http://www.sparklingfloorservice.com
> > Marine Hobbyist: http://www.melevsreef.com
> >
> >
>
>

Refract's should read about 1.027 as they are calibrated in a NaCl solution from the
factory. NaCl has a lower Refractive Index than seawater, thus they always read about .001
units to low. 1.027 = 35 ppt NSW on refract

--
Boomer

Want to talk chemistry ? The Reef Chemistry Forum
http://www.reefcentral.com/vbulletin/index.php

Want to See More ?
Please Join Our Growing Membership
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If You See Me Running You Better Catch-Up
"Ken" <kensn@com(delete)cast.net> wrote in message
news:82OIb.701720$HS4.5030569@attbi_s01...
: I would like to know where everyone runs their Specific Gravity at? I am
: using a refractometer that is temperature compensated so am I correct to
: believe this is an accurate reading of the true SG when the water sample is
: tested?
:
: TIA
:
: Ken N.
:
:

I'm running 1.024. One of my friends runs 1.018 and everything in his
tank is perfect. It actually is one of the best looking tanks I've
ever seen.


--
reefman MC
------------------------------------------------------------------------
reefman MC's Profile: http://www.reef-chat.com/forum/membe...tinfo&userid=7
View this thread: http://www.reef-chat.com/forum/showt...?threadid=7250

I think you have to calibrate them occasionally. I use RO/DI water to
calibrate mine to zero almost every time I use it.


"Boomer" <wcwing_nospam_@chartermi.net> wrote in message
news:...
> Refract's should read about 1.027 as they are calibrated in a NaCl
solution from the
> factory. NaCl has a lower Refractive Index than seawater, thus they always
read about .001
> units to low. 1.027 = 35 ppt NSW on refract
>
> --
> Boomer
>
> Want to talk chemistry ? The Reef Chemistry Forum
> http://www.reefcentral.com/vbulletin/index.php
>
> Want to See More ?
> Please Join Our Growing Membership
> www.coralrealm.com
>
> If You See Me Running You Better Catch-Up
> "Ken" <kensn@com(delete)cast.net> wrote in message
> news:82OIb.701720$HS4.5030569@attbi_s01...
> : I would like to know where everyone runs their Specific Gravity at? I
am
> : using a refractometer that is temperature compensated so am I correct to
> : believe this is an accurate reading of the true SG when the water sample
is
> : tested?
> :
> : TIA
> :
> : Ken N.
> :
> :
>
>
>