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Originally Posted by SouthBayPhoto
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That's a good article. That's the one you want to listen to.
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It also appears they want to use a Salinity of 30.6 ppt...isn't that WAY too low? Shouldn't it be 35 ppt (NSW) as the article above states?
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Yes, it should be 35 ppt, not 30.6 ppt. You will find a lot of crap on the Internet and you have to be able to recognize it for what it is. Some people are of the opinion that fish do better at below normal salinity. There is no scientific basis for that opinion. None whatsoever. Many vendors -- both wholesale and retail -- keep their fish at lower salinity to save on the cost of salt mix. While this is not particularly harmful for fish, they would do better at natural salinity. Lowered salinities are definitely not advisable for most inverts, especially sea stars because of their
water vascular system.
Surface water salinity can vary in nature depending on location, depth of the water, season of the year, etc., but that doesn't mean it's a good idea to permanently house animals at unnatural salinity levels unless you're trying to replicate the Gulf of Thailand during the monsoon season.