How salty is to salty??

[Anonymous]

Specific gravity. I know its supposed to me 1.023 but how high is to high??

 

[EmilyB]

Body salinity is about perfect...

 

[Anonymous]

Much over 1.026 and you're getting into Red Sea numbers. Much over that and you're getting into Salton Sea/Dead Sea/Great Salt Lake numbers, so break out the brine!

 

[brandon4291]

.026-.0265 is my topoff point and the water change setpoint I use is .024.

 

[monkeyboy]

I know its supposed to me 1.023

Try telling the ocean that! 1.026 is my numbah; been higher with no ill effects.

 

[Anonymous]

1.021-22 is mine.
~wings~

 

[Anonymous]

It should be about 1.025-1.026 in a reef tank.

 

[Anonymous]

Yep.

 

[clamm]

mine seems to run 1.024-1.026, i dont have many problems if you ballpark, i think there is alot more to worry about then immediately getting to the exact hundreth of a decimal.

 

[Anonymous]

I try to stay near 1.026.

Louey

 

[Anonymous]

I've always preferred things a tad on the low side, for reef, 1.023 or so, and for fish only I like it rather low, around 1.020-1.019. I know that issues like allowable O2 saturation, and saturation of other chemicals may be negligible, but I've always had very good success doing things this way.

 

[Anonymous]

Marina
Shut up and get over to the "other place" I have a Q for you.

Jim

 

[brandon4291]

Marina, how'd you get that subscript 2 in your post? neat. is it a windows font thing?>

 

[Anonymous]

ok then I am cool

 

[Anonymous]

Marina, how'd you get that subscript 2 in your post? neat. is it a windows font thing?>

Nope, just makin' use of the code, my friend. ( [ size=7 ] is what I like best)

 

[ChrisRD]

FWIW, last year I took several water samples from several locations on a healthy reef in the Caribbean. Water temps were around 80 degrees F. Results were as follows:

Ca = 410 PPM (Salifert)
Alk = 7.2 dKH (Salifert)
SG = 1.026 (calibrated refractometer)
pH = 8.27 (calibrated handheld monitor)

 

[Anonymous]

...funny thing, the SG is exactly the same in Bodega Bay after correcting for temperature...hmm, it's almost like the ocean has agreed on a universal specific gravity.

 

[ChrisRD]

LOL Matt...

According to recent articles by Randy Holmes-Farley, Shimek et al., salinity around most tropical reefs is 35-36 ppt. According to Randy "Seawater with S= 35 has a specific gravity of about 1.0264". This is at 25 degrees C / 77 degrees F.

It's important for people to know what standard the instrument they're using to measure SG is calibrated to so they can adjust their readings accordingly. Some instruments compensate for different temps, but with varying degrees of accuracy. Probably best to just check your readings on a solution of known SG...

Here's a great article Randy wrote about this recently:
http://reefkeeping.com/issues/2004-06/rhf/index.htm

HTH

 

[da colts1]

i keep mine at 1.022 at 76 degrees.

 

[Anonymous]

...funny thing, the SG is exactly the same in Bodega Bay after correcting for temperature...hmm, it's almost like the ocean has agreed on a universal specific gravity.

Well it IS pretty much a single body of water, so I don't really find this suprising. :wink:

Jim