Good luck bro, got the makings of a interesting grow so if you dont mind i will tag along for the ride.
HubbaBubba is right in saying the Silicon would help strengthen her up to the extreme climate, silicona is silicon in Spanish but the type used in construction or fake titties lol you would want to look for silicatos when it comes to gardening, could not find much that i could say for sure would be good for Cannabis nutes in your link to Home Depot they just seem to stock basic general purpose nutes that may or may not work, have linked below to a online Cannabis shop in Mexico that i have seen good things said about on the Spanish Cannabis forums they look to stock just about everything you would need including Armor Si which is a silicon supplement.
http://www.culturah.com/