dropping salinity how fast

[Grkgod36]

how fast can i drop salinity ? say from 1.029 to 1.026? can it be down within 2 days? or more ?

 

[Dkuhlmann]

What do you have in your tank?

 

[Grkgod36]

Mix reef sps lps and a few fish

 

[Dkuhlmann]

The sps aren't as forgiving as the others of fast changes, so this said I'd take it down over a few days like you said. Maybe .001 ppm per day should be fine. There really is no perfect answer IMO

 

[Grkgod36]

That's what I figured , I'm going to do this in a weeks time , the only hard part is figuring out how many gallons of tank water to take out and replace with RO water. In a 120 gallon system ... I think 5 gallons ...

 

[nuxx]

Not a huge drop, should be fine doing it over a few days.

 

[Grkgod36]

gotcha thanks. so if i take it .002 down a day should be good.

 

[nuxx]

I'd take a 2-3 day break between lowering it.

 

[Grkgod36]

Peter , good call I was just considering that . Thank you