Most salt will work just be sure that what you use does not have YPS (http://en.wikipedia.org/wiki/Sodium_ferrocyanide) in it as it clogs the cell and they are costly to replace.
chlorinated fresh water (not salt water )
stagnet or still water attracts mosquitos weather salt brackish or chlorine Not your pool. A salt water pool IS a chlorinated pool if the system is working properly.
Yes salt water pools are chlorinated pool any way.
To the best of my knowledge, no they can't. Your salt pool converts the salt into chlorine, and plankton cannot live in a chlorinated system.
salt water
Yes, just install the chlorine generator and add the salt. Your new system will replace the need for residual chlorine.
Yes there is no need to drain a chlorinated pool to change it to salt water pool all you have to do is add the salt install the new equipment and run it as usual.
it rusts
Yes
Oh yes, viruses and other agents of disease are impeded by salt water just as much as they are by chlorinated fresh water. HIV does not spread through salt water.
no, and I think you mean "salt water chlorine generator" not "salt water pump"
Yes You can. As a matter of fact the salt will actually make the water feel better to swim in. In a salt water pool the concentration of salt is about the same as that you would find in tear drops, this makes the water easier on the eyes. Salt water pools are in fact chlorinated pools where the salt in the water is run through a chlorinator that produces the chlorine electronically. So there is nothing to worry about.