Adding fresh water

[Giv]

Hi,
Should I add fresh water to marine aqarium to reduce the Salinity and Specfic gravity increase?

 

[ade]

In a word - yes. Adding fresh (pref RO!) water will "dilute" the salinity. All top-offs should be with fresh RO water, as the salt itself doesn't evaporate - hence the salinity rises as water evaporates, adding fresh water will then dilute it back down. So if your salinity is too high, adding fresh water will bring it back down.

What is your salinity/SG reading? What are you looking for it to be etc?

Cheers

Ade

 

[Giv]

In a word - yes. Adding fresh (pref RO!) water will "dilute" the salinity. All top-offs should be with fresh RO water, as the salt itself doesn't evaporate - hence the salinity rises as water evaporates, adding fresh water will then dilute it back down. So if your salinity is too high, adding fresh water will bring it back down.

What is your salinity/SG reading? What are you looking for it to be etc?

Cheers

Ade

Abe,
Thanks for thetip, the Salinty is around 35 and SG 1.026.

cheers
Giv

 

[Great Lakes]

Yeah, that is a wee bit high. I shoot for 1.025-1.024

GL

 

[ade]

I was told to aim for 1.023-1.024 and I've somehow managed to get mine sitting bang in the middle of the two!

 

[ostrow]

I don't believe 1.026 is cause for worry. Some on RC find that level optimal.