Help with salinity!

[Ajphillips]

Hi all, ok so finally got my new tank and all are moved in!

I lowered my salinity in the old tank gradually to 1.010 to eliminate any nasties before the move to make sure illness didn't cause any un needed stress, and then matched the water levels in the new tank to the old. But now I need to raise them again....

I don't have a drop filter or top off so I'm going to have to improvise there, I'm thinking I can mix a gallon of tank water and raise it to a super salty mix and drip it in through a valve, my question is if my salinity is 1.010 and it's a 60g tank, what mix do I need and how quickly should I add it? I understand slower is better but I'm struggling with the maths here!

If there is a calculator out there I've not found it yet

More info all water perimeters are perfect bar the sg, it's a FOWLR tank

Thanks for the help

[chris.scang]

To raise my salinity I just use saltwater mixed to 1.026 as my top off water. It will increase your salinity slowly based on your evaporation rate.

[downbeach]

Originally Posted by chris.scang

to raise my salinity i just use saltwater mixed to 1.026 as my top off water. It will increase your salinity slowly based on your evaporation rate.

+1

[Ajphillips]

Ok so here's my maths, probably entirely wrong but here's what I'm thinking

My current water is 1.010
I take a gallon of that and increase it to 1.050
1.050 divided by 60 gives me 0.017 increase per gal

Adding 0.017 to 1.010 gives me 1.027 overall and adding that over 5 days would be an increase of 0.005 per day?

[chris.scang]

I can't tell you if your math is correct or not because, like I said above, I just use saltwater mixed to 1.026 as my top off water. Are you in a hurry to raise your salinity?

[Portsie]

I'm with Chris, just top off with 1.026, no rush, and no worries about going too fast.

[Ajphillips]

No massive hurry but I don't have access to anyone selling salt water so have to make my own, and really don't want to shock my fishes with a sudden change since they are already spooked from the move (last night)

Thanks for the reply!

[disc1]

Originally Posted by Ajphillips

I take a gallon of that and increase it to 1.050

Good luck with that. Watch your calcium and alkalinity levels, you're going to see a lot of precipitation.

A much better solution would be to raise the salinity slowly by topping off with saltwater.

[salajander]

Salinity change calculator here: http://www.hamzasreef.com/Contents/C...etSalinity.php

[Ajphillips]

That's perfect thanks for the answer!

[Randy Holmes-Farley]

The written math is not correct.

1 gallon of sg 1.050 + 59 gallons of sg 1.010 would give 1.0107, not 1.027

you do the math without the leading 1

0.05x1/60 + 0.01x59/60 = .0107, so the result is 1.0107