I've just had look through grow there. Got some nice lookin plants. I'm failing to see any white fly though?
I grow a few chillis in the summer, and one thing about whiteflies/greenflies/blackflies etc, if you've got a few in your environment, in a day or two, you will have hundreds. They multiply like wild fire! If you could post some pictures of said flies that would be great.
The tap water won't damage it, cannabis is just a plant like any other, used to growing out door, where the elements will effect the plant.
The reason I would advise against washing (please bare in mind this is just my opinion and have no experience of it) is that I would imagine you're getting to lose most of your tricromes in the process, and it's just another step to complicate things.
If you've got plenty of smoke, perhaps give it a go on a few buds, if you're in short supply, perhaps leave for a few grows?
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