I remain a bit intimidated by the potential size of three or more of these aji Amarillos, and have been tracking down pictures of the mature plants. I found these on The Hot Pepper. The first post mentions aji pacay, which the author says is a larger version of Aji Amarillo.
http://thehotpepper.com/topic/62805-...o-for-a-prize/
Post #14 includes a word document about Ajis. It's in Spanish.
I will be growing most of mine in soil in "5 gallon buckets" with 1 gallon reservoirs, and I have been pruning the peppers a little to influence how they grow. I do have one that is growing in a non-circulating ??? (kratky style), but I'm not sure I will leave it there.