I've well over 40 years of growing every which way under the sun (and indoors too, every pun intended).. From research grows like the University of Eugene (back before the fist PResident Bush made sure no more growing anywhere but Kentucky) to tiny small CFL grows in the back closet...
I've ran into a lot of people who have some great ideas and most everyone has their own way to do things to make things successful for them.
Water works great for me, on every strain I've ever tried.. always. But that's just me, that's just anecdotal and it wont mean a thing to anyone else's gig.
Others may not have the same experience.. so I do hope they find whatever way it is that helps them to keep the groove.. it's a wonderful hobby and everyone should enjoy it.
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I will say in my own experience, I have found creating the right degrees of ambient light to be the most important thing I myself find any concern at all over..,, after all, if a cutting doesn't take (and they usually do) just take another.. the stuff grows like weeds.