Well I have taken all the thoughts into play and let me say that so far I haven't found the problem answered. Its not a Purple its Black and may seem that in the photos as I had to lighten the photos in order to see the problem a bit better. But it had the look of Black Mildew. Its passable as I have found it on 2 of my other plants which are completely different strains and its was only on 2 budding tips that I touched after touching the tips on the plant with it on several tips. SO I now use latex gloves and have started using a mild bleach to rinse off between handling the plants.

This tells me its not a genetic variance of the one plant, And since all my plants are in the same area and receiving the same nute mixes and all are looking in perfect health I don't see a nute over/under issue. I only have 4 plants 1 a tall one with wide indica type leaves and is earliest flower of them.. I'm a bit afraid its actually a Rope Hemp plant but gona let it finish if its good ok if not theres always hash, one is a low growing very bushy thin leaf girl that perfect. The other two I'm useing Scrog and have them under a chicken wire top and are spread out over a 8 X 4 foot area . Its one of these in the scrog setup thats the one that has ongoing black tips that are on maybe 15 to 20 % of this plant. It seems that its not readily transfered to the plant next to it as the one next to it has had maybe 2 or 3 tips affected that I have snipped off .

But as a check a couple days ago I rubbed my finger on an affected tip and went to the tall indica and rubbed a bud on a lower branch and a tip on the short sativa and both tips formed the Black Tip. I clipped em off today but its deff infective.

So far I have tried Fugicide and made a mild bleach spray and tried both.. No Effect on the black..

And Yes if left alone it Kills the new tip and spreads to the stem and all surounding leaves causing the leaves to first curl then droop then die. So picking them off as I find them is the only solution I see so far as far as yield If this keeps up and threatens my good plants I'm a gona pull the bitch up by the roots..!! If anyone comes up with any ideas I have yet to try please let me know.. Thanx folks..