Wouldn't we, as a cannabis growing community, have noticed this decades ago if it was true?

A grower using nothing but distilled water (there are plenty of them) would say, "Jeebus! My plants are growing three times faster (8 weeks vs. 6 months) than these other peoples plants." It would become common rule to never use tap water to grow cannabis with.

Also, almost everyone using tap water would notice what they are calling 'foliage fluorosis'. They claimed, "This caused a yellowing effect on the leaves at the early plant growth stage, known as, "foliage fluorosis". I use fluoridated tap water and have never noticed a yellowing effect on my leaves.

And also again, a simple Google search for "foliage fluorosis" comes up with pretty much nothing.

I say that they are full of crap. They never explain what they are calling "favourable climate conditions". They could be growing Cannabis indoors under 10,000 watt of lighting and going, "Jeese, this stuff is growing fast--I wonder why?" Then they go out into the fields and test the soil and find out that the soil has high levels of fluorides. Then they automatically jump to the conclusion that the high levels of fluorides are leading to poor crop production.

There may be a correlation between the less-than-perfect plant growth and fluorides in the soil, but that does not proove the causation of high fluorides and less-than-perfect plant growth.

"The plant chemical defence system is too busy reating to the toxins instead of just getting on with the job of growing," says Mr Robertson. What the hell is "reating"? "Bill Robertson (former Parks & Wildlife Officer and cray fisherman)". If you want to listen to the fisherman about how to grow Cannabis be my guest. I am going to stick with my fluoridated tap water as it seems to be doing the job just as well as distilled water.