Increasing salinity question

gtp0083 · 11/15/2017, 10:21 AM

I'm slowly increasing the salinity on my reef tank from 1.022 to 1.026. Honestly I got complacent and didn't realize it got that low.

I've started increasing by using saltwater for my ATO

it's water change time. My salinity is now about 1.024 maybe .023 from a week of salt ATO. What salinity should I use for my water change? Match what the tank is or slightly higher?

Thanks in advance

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nereefpat · 11/15/2017, 10:25 AM

If it's not a large water change (less than 25% or so), I would use 1.026 saltwater.

gtp0083 · 11/15/2017, 10:37 AM

It's a 50g I usually do a 10% change weekly

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Shamous113 · 11/15/2017, 10:48 AM

Here is a handy target salinity calculator that I have used. it works well.

nereefpat · 11/15/2017, 10:52 AM

5 gallons x (1.0)26 = 130
45 gallons x (1.0)24 = 1080
130+1080=1210

1210 / 50 gallons = 1.0242

So a 5 gallon water change with 1.026 water would increase your salinity from 1.024 to 1.0242...so it won't be noticed.

gtp0083 · 11/15/2017, 01:36 PM

Perfect thanks

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hkgar · 11/15/2017, 02:08 PM

I have theses formula in an excel spread sheet and you can calculate for change amount, salinity of change or ending salinity.
TV= Tank Volume
CA= Change amount TV*(ES-SS)/(CS-SS)
SS= starting salinity
ES= ending salinity +(((TV-CA)*SS)+(CS*CA))/2
CS= Salinity of water change +((TV*ES)-(TV-CA)*SS)/CA

gtp0083 · 11/15/2017, 02:46 PM

Just got complicated. I'll stick with a very slight increase and see what happens

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11/15/2017, 10:21 AM	#1
gtp0083 Registered Member Join Date: Apr 2007 Location: waddell, AZ Posts: 255	Increasing salinity question I'm slowly increasing the salinity on my reef tank from 1.022 to 1.026. Honestly I got complacent and didn't realize it got that low. I've started increasing by using saltwater for my ATO it's water change time. My salinity is now about 1.024 maybe .023 from a week of salt ATO. What salinity should I use for my water change? Match what the tank is or slightly higher? Thanks in advance Sent from my iPhone using Tapatalk

11/15/2017, 10:25 AM	#2
nereefpat Registered Member Join Date: Apr 2016 Location: Central Nebraska Posts: 3,190	If it's not a large water change (less than 25% or so), I would use 1.026 saltwater. __________________ Pat Current Tank Info: 125 in-wall , 40b sump. 6 bulb T5. ASM G2 skimmer. LPS and leathers

11/15/2017, 10:48 AM	#4
Shamous113 Registered Member Join Date: Nov 2015 Location: Ontario, Canada Posts: 81	Here is a handy target salinity calculator that I have used. it works well. __________________ Current tank: 150gal mixed reef display w/120gal basement sump

11/15/2017, 10:52 AM	#5
nereefpat Registered Member Join Date: Apr 2016 Location: Central Nebraska Posts: 3,190	5 gallons x (1.0)26 = 130 45 gallons x (1.0)24 = 1080 130+1080=1210 1210 / 50 gallons = 1.0242 So a 5 gallon water change with 1.026 water would increase your salinity from 1.024 to 1.0242...so it won't be noticed. __________________ Pat Current Tank Info: 125 in-wall , 40b sump. 6 bulb T5. ASM G2 skimmer. LPS and leathers

11/15/2017, 02:08 PM	#7
hkgar Registered Member Join Date: Oct 2002 Location: Dewitt MI Posts: 5,051	I have theses formula in an excel spread sheet and you can calculate for change amount, salinity of change or ending salinity. TV= Tank Volume CA= Change amount TV(ES-SS)/(CS-SS) SS= starting salinity ES= ending salinity +(((TV-CA)SS)+(CSCA))/2 CS= Salinity of water change +((TVES)-(TV-CA)*SS)/CA __________________ Gary 180 gallon, 40 gallon sump, 3 250 W MH + 4 80W ATI T5's, MTC MVX 36 Skimmer, Apex controller Aquamaxx T-3 CaRx Current Tank Info: A 2 Barred Rabbitfish, Red Head Salon, Yellow/Purple, McMaster Fairy, Possum, 2 Leopard Wrasses, Kole, & Atlantic Blue Tangs, 2 Percula Clown, 3 PJ and 1 Banggai Cardinalfish , Swallowtail, Bellus and Coral Beauty Angels

11/15/2017, 10:37 AM	#3
gtp0083 Registered Member Join Date: Apr 2007 Location: waddell, AZ Posts: 255	It's a 50g I usually do a 10% change weekly Sent from my iPhone using Tapatalk

11/15/2017, 01:36 PM	#6
gtp0083 Registered Member Join Date: Apr 2007 Location: waddell, AZ Posts: 255	Perfect thanks Sent from my iPhone using Tapatalk

11/15/2017, 02:46 PM	#8
gtp0083 Registered Member Join Date: Apr 2007 Location: waddell, AZ Posts: 255	Just got complicated. I'll stick with a very slight increase and see what happens Sent from my iPhone using Tapatalk