dropping salinity how fast

Grkgod36 · 10/25/2015, 08:15 PM

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

Dkuhlmann · 10/25/2015, 08:21 PM

What do you have in your tank?

Grkgod36 · 10/25/2015, 09:56 PM

Mix reef sps lps and a few fish

Dkuhlmann · 10/26/2015, 05:04 AM

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 · 10/26/2015, 11:30 AM

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 · 10/26/2015, 12:01 PM

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

Grkgod36 · 10/26/2015, 05:45 PM

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

nuxx · 10/27/2015, 10:44 AM

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

Grkgod36 · 10/27/2015, 11:36 AM

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

10/25/2015, 08:15 PM	#1
Grkgod36 Registered Member Join Date: Apr 2011 Posts: 375	dropping salinity how fast how fast can i drop salinity ? say from 1.029 to 1.026? can it be down within 2 days? or more ?

10/25/2015, 08:21 PM	#2
Dkuhlmann Registered Member Join Date: Mar 2015 Location: NW Iowa Posts: 8,823	What do you have in your tank? __________________ Previous tanks: 200 gal fowlr 9" Emperor Angel and many different butterfly fish 4" maroon clown and several other fish, 50 gal sump, 40 gal mixed reef/fish mostly softies and LPS. Current Tank Info: 40b 750 gph 45 lbs lr, 2"-3" sand, 165w full spectrum dimable LED, 20 gal sump/refugium 30 lbs lr, Bak Pak 2 skimmer, 4" sock temp 79-80, sg 1.026, NH3 0, NO2 0, NO3 <10, ph 8.2, calc 400, mag 1300

10/26/2015, 05:04 AM	#4
Dkuhlmann Registered Member Join Date: Mar 2015 Location: NW Iowa Posts: 8,823	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 __________________ Previous tanks: 200 gal fowlr 9" Emperor Angel and many different butterfly fish 4" maroon clown and several other fish, 50 gal sump, 40 gal mixed reef/fish mostly softies and LPS. Current Tank Info: 40b 750 gph 45 lbs lr, 2"-3" sand, 165w full spectrum dimable LED, 20 gal sump/refugium 30 lbs lr, Bak Pak 2 skimmer, 4" sock temp 79-80, sg 1.026, NH3 0, NO2 0, NO3 <10, ph 8.2, calc 400, mag 1300

10/26/2015, 12:01 PM	#6
nuxx RC Sponsor Join Date: Jan 2014 Location: Austin, Tx Posts: 3,990	Not a huge drop, should be fine doing it over a few days. __________________ Peter TankStop - Fish and Coral 470G Display - Build Thread Current Tank Info: Retired - 470 Gallon Mixed Reef (120x29x31")

10/27/2015, 10:44 AM	#8
nuxx RC Sponsor Join Date: Jan 2014 Location: Austin, Tx Posts: 3,990	I'd take a 2-3 day break between lowering it. __________________ Peter TankStop - Fish and Coral 470G Display - Build Thread Current Tank Info: Retired - 470 Gallon Mixed Reef (120x29x31")

10/25/2015, 09:56 PM	#3
Grkgod36 Registered Member Join Date: Apr 2011 Posts: 375	Mix reef sps lps and a few fish

10/26/2015, 11:30 AM	#5
Grkgod36 Registered Member Join Date: Apr 2011 Posts: 375	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 ...

10/26/2015, 05:45 PM	#7
Grkgod36 Registered Member Join Date: Apr 2011 Posts: 375	gotcha thanks. so if i take it .002 down a day should be good.

10/27/2015, 11:36 AM	#9
Grkgod36 Registered Member Join Date: Apr 2011 Posts: 375	Peter , good call I was just considering that . Thank you