According to our SIP that we did Tap water grew the best but others say that Distilled water or rain water..... I don't know :)))) just suggesting
What Type Of Water Do Plants Grow Best In ?
I like to use water that I boiled plants in. It has nutrients (extra) in it that give make the plant healthy.. As everyone knows. But otherwise, just use plain tap water.
Rain water
Flavored water
Problably regular water I'm doin a class project about this and the ones with regular is making it grow.