raising or lowering specific gravity

[mikesin]

Hello, Is there a formula for how much salt mix to add to raising specific gravity. My 75G setup has a specific gravity of 1.020, I would like to get it at 1.022 or 1.023 - how much salt mix do i need? or is this a guessing game till I gain experience?
Thanks

 

[miaheatlvr]

Originally Posted by Mikesin
Hello, Is there a formula for how much salt mix to add to raising specific gravity. My 75G setup has a specific gravity of 1.020, I would like to get it at 1.022 or 1.023 - how much salt mix do i need? or is this a guessing game till I gain experience?
Thanks
Is there anything in the tank? Jist do your top-offs with prepared salt water instead of fresh.. till you reach your desired s.g.

 

[groupergenius]

To raise it, I mix alot of salt in a large glass. Add a little in the highest flow spot, probably the sump before return. And wait 20-30 minutes then check. If it's still low, repeat.
Just add small amounts at a time and give plenty of time in between. A large swing in a short amount of time can harm your critters.

 

[maxalmon]

Because I'm constantly selling frags, my tankwater gets depeleated and sg drops. I have a 2g water bucket that I add about 5-6 cups of salt, then I just dump this into my fuge once the salt has dissolved, it's just enough salt to for me to go from 1.020 to 1.025

 

[mikesin]

oops, my bad, no, there isn't anything in the tank, I just filled it the other day. But i added straight (unmeasured) RO/DI water to make up for the sump which resulted in the low s.g.