How Fast Can I Lower Salinity?

dmills422 · 04/29/2010, 08:04 PM

I didn't realize that it had been so warm in my room during the day and I let my speccific gravity get up to 1.030. How fast can I get it back down to 1.025 without hurting anything. How bad is this salt level for my inverts? My BTA is looking rather unhappy.

75gsalt · 04/29/2010, 08:08 PM

If you can get it down by just top off then add half of what you need and wait about an hour then finish up. You should be ok. If you have to remove water then I would do it over a few hours.

dmills422 · 04/29/2010, 08:10 PM

Okay. I don't have to take any water out. It was all from evaporation. Thanks!

tmz · 04/29/2010, 08:31 PM

!.030 is not likely to kill anything but I'd personally try to get it to around 1.028 pretty quickly then go slow to 1.026.

bertoni · 04/29/2010, 09:15 PM

I'd likely just add enough to move the salinity .001 units at a time, perhaps a few hours apart. 1.030 shouldn't cause any problems over the short term (a few weeks, or more). I ran tanks at that level for months without problems, due to a bad salinity device.

Rapid changes in salinity can damage many invertebrates, due to osmotic shock, so I'd use a drip, if possible.

04/29/2010, 08:04 PM	#1
dmills422 Registered Member Join Date: Apr 2010 Posts: 38	How Fast Can I Lower Salinity? I didn't realize that it had been so warm in my room during the day and I let my speccific gravity get up to 1.030. How fast can I get it back down to 1.025 without hurting anything. How bad is this salt level for my inverts? My BTA is looking rather unhappy.

04/29/2010, 08:08 PM	#2
75gsalt Registered Member Join Date: Feb 2010 Location: Southeast Kansas Posts: 286	If you can get it down by just top off then add half of what you need and wait about an hour then finish up. You should be ok. If you have to remove water then I would do it over a few hours. __________________ 75 ga. reef 20 gal. sump corals GSP assorted Polyps Zoos PomPom Xenia Waving Hand Xenia Blue Mushroom Toadstool Leather Current Tank Info: 75g. reef 125 lbs. live rock 90lbs. live sand 1 Clown small Regal Tang 20 Nass. Snails Turbos hermit

04/29/2010, 08:31 PM	#4
tmz ReefKeeping Mag staff Join Date: Apr 2006 Location: West Seneca NY Posts: 27,691	!.030 is not likely to kill anything but I'd personally try to get it to around 1.028 pretty quickly then go slow to 1.026. __________________ Tom Current Tank Info: Tank of the Month , November 2011 : 600gal integrated system: 3 display tanks (120 g, 90g, 89g),several frag/grow out tanks, macroalgae refugia, cryptic zones. 40+ fish, seahorses, sps,lps,leathers, zoanthidae and non photosynthetic corals.

04/29/2010, 09:15 PM	#5
bertoni RC Mod Join Date: Mar 2002 Location: Mountain View, CA, USA Posts: 88,616	I'd likely just add enough to move the salinity .001 units at a time, perhaps a few hours apart. 1.030 shouldn't cause any problems over the short term (a few weeks, or more). I ran tanks at that level for months without problems, due to a bad salinity device. Rapid changes in salinity can damage many invertebrates, due to osmotic shock, so I'd use a drip, if possible. __________________ Jonathan Bertoni

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04/29/2010, 08:10 PM	#3
dmills422 Registered Member Join Date: Apr 2010 Posts: 38	Okay. I don't have to take any water out. It was all from evaporation. Thanks!