How Much Salt

All about freshwater & saltwater - dechlorinators, salt, water bowls, and pool construction & maintenance.
Post Reply
User avatar

Topic author
Posts: 242
Joined: Fri Nov 20, 2015 5:30 pm
Location: Florida

How Much Salt

Post by jonathon1989 » Sun Jan 03, 2021 10:19 am

I currently use Instant Ocean and have always used a half cup of salt per gallon of water according to the instructions. Is this okay? I've been wondering if all this time I've been using the right amount.


User avatar

Senior Moderator
Senior Moderator
Posts: 2405
Joined: Sun Sep 05, 2010 3:54 pm
Location: Manitoba, Canada

Re: How Much Salt

Post by curlysister » Sun Jan 03, 2021 10:54 am

From the water care sheet:

All of the major salt brands are measured the same, depending on how much you need:

1 gallon of water to ½ cup of salt mix

½ gallon (which is 2 quarts) of water to ¼ cup salt mix

1 Pint (which is 2 cups) of water to 1 Tablespoon (which is 3 teaspoons) salt mix

1 cup of water to ½ Tablespoon (which is 1 and ½ teaspoon) of salt mix
"If there are no dogs in Heaven, then when I die I want to go where they went." -Will Rogers

User avatar

Posts: 53
Joined: Wed Jul 29, 2020 10:06 pm
Location: West Virginia

Re: How Much Salt

Post by Enson » Wed Jan 06, 2021 1:11 pm

I'm definitely not an expert, but here's just an opinion. Since they normally deal with varying levels of brackish water in the wild and in our habitats there should also be fresh water close by if they need to dilute it, I doubt it's very critical.

If you want to measure it there are tools to measure the specific gravity of the water and make sure you get it to the salinity you want.

The instant ocean hydrometer on the left is going to be less accurate but much cheaper. The refractometer on the right is the most accurate method at home test I've heard of. "King of DIY" Joey Mullin on youtube has a good video showing how they both work and how to use the refractometer, or at least a very similar one. He's a bit full of himself but he does a good job explaining how to use it properly. Start at 11:45 if you want to skip to this part. The video has some other info in it for saltwater tank setup.

Sorry that's just engineer in me talking. Lol[IMG]https: ... 13eda7.jpg[/IMG]

Sent from my moto g power using Tapatalk

Post Reply