Well I seemed to have misplaced my hydrometer, so I can't give you that in terms of specific gravity, but I really don't use it any more anyway, used to use it when I had salt water tanks. Anyway I use 1 tablespoon of Corralife marine salt(far better to use than simple NaCl) per 10 gal. My average tablespoon weighs about 14.4grams so per 37.58liters thats 3.8x10-4 times 100= 0.038% salinity, to answer your question.

I believe brackish is generally regarded as 0.05-3% and sea is 3-5%. So, basically I am running on the high end of fresh and just under the low end of brackish.

I use well established undergravel filter with weekly 80-90% water changes, so I don't need to worry about providing an additional sourse of fresh drinking water, if they are thirsty, which at the salinity I doubt they are, but if they are they can take a big drink while I am filling up the tank before adding the salt. This has worked well for me, no fungal problems and great health and growth. Actually I have always(20plusyrs) used marine salt even in my fresh water tanks at 1tbs/10-20gal, for the anti(bad)microbial properties as well as the benefits of the minerals and trace elements, which I believe are very benefitial to long term health. I have hard well water too, which is good for the diamonds water parameters, very bad for raising Discus though, thats why I used to breed mostly Cichlids. I also added some crushed shells and coral to the gravel substrate for buffering the salty hard water and as a calcium source.

Do you raise diamonds? what salinity?
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Jeff Benfer



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