Salinity

[hawk]

What the pros and cons of running high salinity, if all fish are happy? What's too high ?

Edit: Also this Is a reef tank

 

[rodasphoto]

Less dissolved oxygen. My corals seem to like higher salinity.

 

[hawk]

Rodasphoto;716350 wrote: Less dissolved oxygen. My corals seem to like higher salinity.

How high and what types of corals?

 

[lilrobb]

Rodasphoto;716350 wrote: Less dissolved oxygen. My corals seem to like higher salinity.

Elaborate - higher salinity causes less dissolved oxygen?

Higher salinity means more trace elements per gallon, so corals are usually happier.
Fish have an active way of regulating their osmotic pressure and therefor don't care as much for higher levels.
Lesser developed animals such as anemones, etc have a bit more of a problem to adjust to "unnatural" levels.

 

[rodasphoto]

LilRobb;716357 wrote: Elaborate - higher salinity causes less dissolved oxygen?

 

[lilrobb]

http://water.usgs.gov/owq/FieldManual/Chapter6/table6.2_7.pdf">http://water.usgs.gov/owq/FieldManual/Chapter6/table6.2_7.pdf</a>

Seems neglectable to me, you would need some serious levels to cause a good change...

 

[ralph atl]

1.026 or 35 calibrated is a good start.

 

[cr500_af]

mysterybox;716444 wrote: 1.026 or 35 calibrated is a good start.

This. If we are going to go to all the trouble to replicate natural seawater in terms of trace elements that are in it, it doesn't make any sense to me to use less of</em> it than is found in natural seawater. Fish aren't an issue, but corals, being much more delicate, will be much happier with levels approximately that of nature.