Hal, I think that you have had tremendous success with your coco grows and the only thing that I am really doing different than you right now is using CalMag with the 3 part to supplement the micro nutrients and doing an everyday watering, but I don't think that the information I am passing on is irrelevant by any means, coco does have different grades just like soil, and depending on weather or not it was harvested by the ocean, or inland and how it was processed can play a significant role in the success of a persons grow, because of different salt/sodium build ups, and the difference between loose coco and brick coco that expands. Also coco processes P and K differently than soil or any other soilless mediums so I think that if a person understands some of these things that I am bringing up, one may be a little better informed in case they think coco is fool proof, which IMO, no successful MJ growing is.
Also, when veging for short amounts of time like you are doing you are less likely to encounter some of the defs like when veging for weeks. I think your grows are awesome and it was your grow some months back that really motivated me to take the coco root, but I believe an ounce of prevention is worth a pound of cure.
Sometimes people get off on the wrong foot when trying a new style of growing and they give it up, but like in your case, you started off on the right foot with out the headaches, but after reading dozens of threads on failed coco grows and threads on successful ones, I am confident that I am not trying to complicate the issue, but rather help assist some people with an interest in growing coco on the ins and outs of it, and I hope that even with seeing the great success that you have had they will be more confident to go coco.
Adieu and in the famous words of GK, Iloveyou