rainwater, good or bad??

[gypski]

Same here ... been there, done that, and the best results I have gotten have come from plain, old tap water. And the price is right compared to buying distilled or purified at the store.

Shhh, don't tell anybody but there have even been a few times I forgot to let it sit out for a couple of days and there were no noted adverse reactions from using it without evap'ing the chlorine.

I agree about no adverse effects for not off gassing the chlorine. I just add my nutes and have at it. And, I use rain water occasionally too. But with the pollutants in the air, I don't use if as much as tap.!! :twocents: