Hi mj,

I absolutely HATE to tell you this....but I don't know a thing about soil....not one.. I personally think your plants look terrific. Can you post any specs you might have?
Lighting, room temp, from seeds or clones , type of nutes, .....anything you can think of that would be helpful would be great.

I am not at ALL sure what that bud is.....photo just isn't good enough to see exactly what is happening but even in that photo I can tell there's something weird about it.
You might take that pic and post it (and others if you have them)(include specs) in the plant probs section and see if you get some bites......I really don't know but having seen it I'd certainly like to find out as well.

Also....check the ph of your soil runoff...make sure that's around the level you want....especially after overnute and flushing.
Otherwise.....nice grow... very good work. :thumbsup: