Distilled water or tap water that sits out?

Would it benefit my grow if i started to buy distilled water?

i tested this . i used rain water.1.....then 24 hour water.2..........then r/o water.3...........now i use tap and have seen no difference. but i have real good tap water so the 24hr watermight be best

I don't trust tap water, who knows what may or may not be in it. I use distilled only, just cuz i know it just water, and none of the wierd shit from the tap. Still gotta ph it though.

I would do 50/50.

i fill up 5 gal jugs from the hose and let em sit for however long til my plants need watering.. if they need watering the same day then i still use it. just depends i guess

My buddy did his first outdoor this summer, he used straight tap water the whole way through, didn't let it sit out or nothin. His shit turned out fine, but then again it was outside, where I'd imagine it would be harder for things to build up than say if it was in a pot.

Hmm all good points lol

i use r/o for propagating seeds and clones. after that i use tap water. i fill jugs and let sit in a fridge till i use it. from what i read it lets the chlorine evaporate.

my question is do you think the water sitting for that long could go bad? this is the reason i refrigerate it. the food service slut i used to be tells me bacteria grows slow below 45f and above 140f.

i also wonder if there is a simple way to check for bacteria. the TDS do not differ when i test the water.