Curious.. What do you keep your salinity at and is it above 1.025? (1 Viewer)

[Platypus777]

My tank salinity was a little high so I am bringing it back down to 1.025 from 1.027. Which made me curious as to what is the optum salinity and does anyone know if it retards or increases coral growth if over 1.025?

:rotflmao:

 

[guy9smiley2]

Mine is 1.023-1.025

 

[reef junkie]

.27 for me

 

[odie]

shoot for .25 but goes as low as .24

 

[montiporalova]

10.25-6

 

[mapierce7]

1.025-1.026

 

[madscientist1]

1.025-1.026

 

[Flounder]

1.025-1.026

 

[Billy]

I try for 1.025 but since Ian only home one day a week about 1.028-1.027 nothing died yet so I am not to worried

 

[Jstn]

1.026, If you do water changes with lower salinity, one is adding less mg, ca, and alk, which may intern lead to low mg, ca and alk.

 

[Jager]

i usually aim for .026-.027


I dont like it being below .026, and i honestly have no real reason for it. ive just always kept it at the levels i keep it at and have always had good results.

 

[boardn365]

1.025

 

[QTfish]

1.025-1.026

 

[ironman]

1.026, If you do water changes with lower salinity, one is adding less mg, ca, and alk, which may intern lead to low mg, ca and alk.

The difference in negligible.

Anyway, I shoot for 1.025.

 

[Shibbs]

35 PPT

Specific gravity != Salinity

:gay1:

 

[Jstn]

The difference in negligible.

Anyway, I shoot for 1.025.

One would think, but actually that is not the case, there was a thread on RC two years ago when someone tested fresh ASW at (same batch mix ect) 1.024, 1.025, 1.026 SG, the findings were rather interesting with respect to Ca and mg levels. I don't want to quote number until I find the thread but it was enough to make a point.

 

[Jstn]

Found it

I was inspired to post after reading the "Water Quality" thread. A few weeks ago a friend and I did a little water testing after being baffled by why Calcium & Alkalinity were low after a fresh water change. We tested a batch of thoroughly mixed Oceanic salt, and found that Calcium & Alkalinity levels differed substantially with slight adjustments to the salinity:

At a specific gravity of 1.024, the water tested to:

Calcium: 400PPM
Alkalinity: 7.6dKH / 2.51meq/L
Magnesium: 1200PPM

At a specific gravity of 1.0265 (35PPT), the water tested to:

Calcium: 460PPM
Alkalinity: 10.2dKh / 3.66meq/L
Magnesium: 1410PPM

I was pretty surprised to see how much of an impact a slightly higher salinity had on these elements. I didn't test pH, but I wish I would have! Needless to say, I am making an effort to keep my salinity at 1.026 so I don't have to dose two-part nearly as much. I have been struggling to keep my Alkalinity over 8dKH, and I think my low(er) salinity had a huge impact on that. I know that the proper salinity for a saltwater aquarium is subjective, but I wouldn't be surprised if I see a noticeable impact on growth because of it.

Just some food for thought. :fish1:

http://www.reefcentral.com/forums/showthread.php?t=1892306

 

[ironman]

Found it




http://www.reefcentral.com/forums/showthread.php?t=1892306

Interesting, but there are too many variables to call that concrete evidence IMO.

 

[Jstn]

Interesting, but there are too many variables to call that concrete evidence IMO.

How so? I believe its pretty conclusive evidence as long as the refractometer was calibrated, albeit it shouldn't make a difference. I guess you could try it for yourself by mixing a new bucket at 1.024, test the big three and then add more salt to bring it up to 1.0265 and see the resulting changes.

 

[Nanofreak79]

Interesting, but there are too many variables to call that concrete evidence IMO.

Actually, this is true of all salt. Take your salt, and mix it up at different SG and see what you get. This is a bigger problem for smaller systems, because with larger WC's it has the potential to throw off perameters. The only variables being the brand, and how much salt your mixing up, either way you'll end up with different numbers for each salt.