How much salt per gallon of water??

[goofieones]

I used a small scale to measure the salt before and fiqured the mixture by weight, but my scale is lost and I need to do a water change. The salt doesn't say how many cups per gallon. I thought it was 1 cup per gallon, is this right?

 

[pufferlover]

On my Instant Ocean it is slightly over 2 Pyrex Cupfuls to get me .1021 salinity in a 5 gallon bucket.

 

[mr . salty]

Judging by weight is not a good way to go.If the salt mix has been exposed to humid air it will be heavier. I always mix it up a little low,then test the specific gravity and add small ammounts till it's perfect...

 

[bobj]

Coralife works out to .4 cups per gal with a salinity of 1.022

 

[twoods71]

With instant ocean or reef crystals I start off with 1/2 cup per gallon test SG and then add a little at a time until I reach the desired SG reading.

 

[beth]

Most mix packages say approx 1/2 cup of salt per gal, however, you must have an instrument to measure SG. Hold off the maintenace til you can get the appropriate equiptment to do this right.

 

[shel]

I use IO, it is about 1/2 cup per gallon. I keep the salinty at 1.022.
Shel

 

[goofieones]

thanks everyone, now I have a better idea. I had the perfect way to measure the salt for the amount I needed, but like I said I can't find my little scale.