I posted the same quetion in sharks /rays with no response I think this my be a better place to ask my quetion . 
I have this grate nexus filter system I have been planing to use on my shark pond.
it is for a fresh water koi pond, has any one used it for salt water ?
will I have a problem with the stainless steel parts ?
http://www.dan-koi.co.uk/subcat546.html
I already have the filter. I was thinking of coating all the parts with the epxoy paint I will be using on the last layer of the pond ,only if the stainless steel can give me problems.
thanks for reading

I have this grate nexus filter system I have been planing to use on my shark pond.
it is for a fresh water koi pond, has any one used it for salt water ?
will I have a problem with the stainless steel parts ?
http://www.dan-koi.co.uk/subcat546.html
I already have the filter. I was thinking of coating all the parts with the epxoy paint I will be using on the last layer of the pond ,only if the stainless steel can give me problems.
thanks for reading