GMSgrowsanswered grow question 4 years ago It's ok to water with that water but when it comes time to use nutes, when you add your nutes the ph will drop to unacceptable levels. Ph up or baking soda. But baking soda isn't stable. PH down you can use vinegar, but it also isnt stable. Ph up and down is stable and your nute solution doesnt change much over time. Baking soda and vinegar, your ph can drip up or down quickly. If you have to proper humidity you can remove your lid at any time. Cheers