The other link I gave you gave the specific gravity. You will need a refractor to measure the salinity. They can be a bit pricey though. The site below gives much more in depth descriptions on how to create a brackish tank. Another site I read says to create a brackish tank from freshwater (to acclimate your fish and the bacteria), you should only add a salty mix to your tank when you do water changes... that should be every two weeks. Just in case you don't know, you should always mix your saltwater in a separate container (not your tank) so you are sure you have a well mixed solution. If you mix it in the tank, your fish could suffer from dehydration and possibly die. If you'd like to know the mechanisms for the adjustments that are happening inside the fish, I'd be glad to explain it to you. Just let me know.

Oh yeah, and on the link below, your green spotted puffers on in the setup 2 section.

The stuff I suggested is an anti-fungal/bacterial treatment... it should work better.



One thing I want to make sure you know (if yours are the same as the figure 8s), they will need something to wear their teeth down, similar to bunnies.
Brackish water site 2


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Phishie



"An ounce of prevention is worth a pound of cure."

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