Just to be on the safe side, since it is almost impossible to find non iodized salt where I live, will it be a deal breaker if I use iodized salt that has additive (small amount of e536 in my case) in it, since that is the most additive free one i could find?
I searched and found opinions that iodized shouldn't really be a problem, but opinion on additives were a little unclear since everyone just said "try to avoid additives"

Any experiences on this problem?

If you can't find additive free salt, then regular will do fine.

Noone knows if iodine derivatives will cross into the solvent and end up in the crystal matrix but the trace amounts would be so tiny as to be negligible.
Some anticaking agents can cause a little frothing but no problems.

It's food safe anyway. (lungsafe unknown at present)

alright, thanks for the quick reply!