Hyposalinitys effect on Corals

[ggNoRe]

Long story short I have not calibrated my refractometer in a long time and when I finally did I found out my system was at 1.020. Doing a quick Google search I couldn't really find anything on hyposalinitys effect on corals. Was hoping someone could shed some light on any known research in this area.

 

[HuduVudu]

Long story short I have not calibrated my refractometer in a long time and when I finally did I found out my system was at 1.020. Doing a quick Google search I couldn't really find anything on hyposalinitys effect on corals. Was hoping someone could shed some light on any known research in this area.

The ocean flucuates pretty significantly depending on the area that is under consideration.

That said most corals are captive propagated and are used to very stable conditions. IME salanity variations are much less important than alk variations.

My 2 cents.

 

[Miami Reef]

I personally would raise the salinity as soon as you can. Lower salinity means almost all the necessary building blocks are also low.

 

[ggNoRe]

Yes, I plan to raise it to normal levels just slowly overtime. Right now I'm just curious what the effects could have been. I have had several corals over the last several months that don't die yet don't thrive and slowly seem to look less healthy over time. Wondering if that was why.

 

[Miami Reef]

Yes, I plan to raise it to normal levels just slowly overtime. Right now I'm just curious what the effects could have been. I have had several corals over the last several months that don't die yet don't thrive and slowly seem to look less healthy over time. Wondering if that was why.

I would certainly think that may be a contributing factor.

 

[Dburr1014]

I personally would raise the salinity as soon as you can. Lower salinity means almost all the necessary building blocks are also low.

I've had bleaching on my monti sunset. It recovered when I brought sg back in line.

 

[Spare time]

Honestly 1.020 isn't taht bad. I usually say the danger limit is below 1.020 and somewhere above 1.030 as I have seen corals seemingly be fine at various numbers within this range. Again, not saying that these are ideal, nor that I 100% know that the corals are not being bothered, but rather than I haven't seen dramatic bleaching or dying at 1.020 and 1.030. Beyond that, I am not sure (particularly lower than 1.020).

 

[ScottB]

I have not read any research work on the subject, but intuition would suggest that the reaction will depend upon the specie of coral. Some are regularly exposed to hypo in the wild while others never. Some keep a thicker, more protective slime coat than others.

 

[Dburr1014]

Honestly 1.020 isn't taht bad. I usually say the danger limit is below 1.020 and somewhere above 1.030 as I have seen corals seemingly be fine at various numbers within this range. Again, not saying that these are ideal, nor that I 100% know that the corals are not being bothered, but rather than I haven't seen dramatic bleaching or dying at 1.020 and 1.030. Beyond that, I am not sure (particularly lower than 1.020).

My Sunset monti turned completely white at 1.022. Some coral can handle it and some can't.
At 1.029ish my acan joker would not open.
All depends on the coral but you should stay in a range of 1.023~1.026 for most coral to be happy and Healthy.