Salinity level

[Mark3]

I hold very steady between 1.025 and 1.026

 

[rknapp]

1.026ish

 

[Low Tech Reefer]

I keep mine at 1.025

Me as well.

 

[Low Tech Reefer]

1.025 and use a good ole coral life swing arm hydrator. Check it every 3 months with icp and its smack on

I check mine against a refractometer and it's always spot on! It's a very reliable tool

 

[seamonster]

What level do you keep your salinity at

1.024

 

[Cichlid Dad]

1.025

 

[AdamC]

I try for around 1.025

 

[gbroadbridge]

What level do you keep your salinity at

1.026

 

[Fish Kepeer]

For Me / 35-36 PPM

 

[gbroadbridge]

For Me / 35-36 PPM

I think you mean ppt or PSU :) not ppm

 

[Randy Holmes-Farley Verified Community Expert]

Because of the high variability of salinity measuring devices typically used by hobbyists, we are very fortunate that most reef aquariums are quite forgiving in relation to salinity levels.

 

[Hans-Werner]

Ideally 1.028 - 1.029 sg or 38 psu. Protien content is highest at this number. Also, photosynthetic rates drop off above or below this number.

https://www.int-res.com/articles/meps/181/m181p309.pdf

... but experiments were conducted with corals from the Red Sea!

Cultivating them for several years under "normal" conditions doesn't alter their genetics and the enzymes that these genetics encode.

 

[tsharpe291]

1.025/1.026

 

[vetteguy53081]

1.025 for many years. Main reason, ,,, in the event of evaporation , it doesnt get too high

 

[SashimiTurtle]

I try to target 1.026 minimum, 1.028 maximum. Right now the tank is just kind of existing , and I think its around 1.026.

 

[Timfish]

... but experiments were conducted with corals from the Red Sea!

Cultivating them for several years under "normal" conditions doesn't alter their genetics and the enzymes that these genetics encode.

Your right, their genome isn't changed. But I'd point out a few things. First is epigenetics and environment does influence what genes are expressed and how they are expressed (differences in fluorescing and chromo protiens for the same coral under different conditions being obvious examples). The Red Sea's salinity is a range of salinities not a constant, so a genome needs to be able to deal with a range of salinities. The Red Sea is not the only place corals may see high salinities as lagoons may also see high salinities so again a genome needs to be able to deal with different salinities depending on where it lands. We are also dealing with the genomes of the zooxantheallae, further research might show the same coral genome with a different simbiont genome might give different results.

Until we have further research to refine our understanding I see no reason to disregard thier research (I'm looking but haven't found anything yet so please post links if you have any).

 

[Hans-Werner]

Your right, their genome isn't changed. But I'd point out a few things. First is epigenetics and environment does influence what genes are expressed and how they are expressed (differences in fluorescing and chromo protiens for the same coral under different conditions being obvious examples). The Red Sea's salinity is a range of salinities not a constant, so a genome needs to be able to deal with a range of salinities. The Red Sea is not the only place corals may see high salinities as lagoons may also see high salinities so again a genome needs to be able to deal with different salinities depending on where it lands. We are also dealing with the genomes of the zooxantheallae, further research might show the same coral genome with a different simbiont genome might give different results.

Until we have further research to refine our understanding I see no reason to disregard thier research (I'm looking but haven't found anything yet so please post links if you have any).

Hmmm, the water of the Mediterreanean in which corals where kept all the time was 38 psu. Pure chance that the salinity where corals "performed" best was also 38 psu? Maybe 3 weeks was not long enough for full adaptation to other salinities.