Both my MOB plants have been in flower a good 10 days now. But those are always the first to bud. I have 6 other strains showing little to nothing as far as flower yet. Last year I had a plant reveg early, it did it's thing and turned out fine.
Update from Maine, things are moving along nicely. The two MOBs have started to flower, the rest are a lot like me still vegging.The next couple months should be interesting.
Some strains flower earlier, my two MOB are starting to flower also. I have 9 other plants, different strains with no sign of flowering yet. I don't expect them to start until sometime next month.
Honestly, I think all the hype about tap water for the most part is just that hype. I am on city water and water right from the hose. Consistently grow pound plus plants.