I think 10% once a month is a good schedual for a stable tank. if you are having problems I would recomend larger and more frequent, but I think large frequent changes can be a waist of salt, unless you are running with out a skimmer or other "good" filtration ie. frequent carbon change, poly filters ect..
Steve
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 *everything said above is just my opinion, and may or may not reflect the views of this BBS, its Operators, and its Members. If cornered on any “opinion” I post I will totally deny having ever said this in a Court of Law…Unless I am the right one*
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