Help mixing: ? Kg of salt for 1 gallon of water for a 1.025 specific gravity solution?

Im prolly waay off but i was told 2 cups for 5 gal

 

1/2 cup per gallon
Iv never heard of weighing?
Mayb just weight 1/2 a cup of salt? And multiply by 5?

 

2 cups for 5 gallons is going to get you around 1.020 if your lucky. By weight isn't usually used as the differences in precipitation rates for different volumes of different temps and make up are going to conclude it. As a general rule you want a baseline f half US cup per gallon. Let it settle and then mix it up to 1.025\6 or 35on the refractive index. If you don't own a refractometer yet you need one.

You will want to also avoid a by weight basis as moisture in the air will bind with the salt mix and weigh it down, as well as cause clumping.

Stick to the half cup a gallon (or per 3.79 Kg wt.) and mix up