Mineral water 250 ppm sodium to high for seedlings?

I'v got 25 femenized seeds from greenhouse started and am using bottled water.A buddy of mine(years of experience) told me the sodium content is to high.He asked me if some of the leafs were twisting and they are.He thinks it's from the sodium.Should I switch to distilled water.Or tap water(hard water) which would probably be high in calcium.

What do some of you guys think?

Anybody got anything?

I've never had problems with using my own tap water, after I let it sit out with a bubbler for 24 hours. Can't go wrong with distilled, if you're already paying extra for water.

Thanks for the info. guys. I think I will go with distilled or rain water

Anyone know how expensive reverse osmosis filters are?