Best thread high jacking ever!
Have you tried foliar feeding semen yet? I started treating my plants with vitamin se years ago. I treat my plants to vitamin se at least three times a day.

Vitamin se has Zinc in it which ironically helps with white leaf tips and even more ironic this is more natural than feeding a Zinc and Iron liquid fert. Also vitamin se foliar feeding seems to make my cannabutter taste better, especially the low salt organic butter.
^ "Without knowing it you have perpetuated a delicious argument". Agree!
"you can be sure that this thread will be hijacked". Agree! The thread has now been high jacked.
http://www.healthline.com/health/testosterone-and-zinc
Here is a link to a chart showing to use Zinc when you have white leaf tips.
http://www.weedfarmer.com/cannabis/tables_guide.php
And here is a pic showing a application of vitamin se.
@PorterRockwell is supposed to be a high caliber supplier of vitamin se.
@CC Dobbs has been using this technique for years as well, not sure why he didn't share this bit of information with you, he must be holding back.