Quote Originally Posted by Purple Daddy
How about this idea....use distilled water and supplement cal mag
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A good idea if you have only a few plants but could become cumbersome if you're having to water mulitiple plants every few days.
or when you have a 55 gallon resevior that needs that needs to be changed weekly. I also use another 25 gallons just topping the res off during the week.


It depends on where you are, each city and state has its own local water source. Luckily i have a very clean water source so i have nothing to worry about. I've never let my water sit out and have seen no negative effects. Plants grow great.
drudown11 Reviewed by drudown11 on . WATER QUESTIONS? Hello, there is a theory that you should let tap water sit out for 24-48 hrs before using it, my question is if you let it sit out covered or sealed (I.E. old plastic milk containers with the cap on) is it doing any good, or does it need to sit uncovered? newbie thanks!;) Rating: 5