IAmA hydroponic gardener at McMurdo Station, Antarctica for the winter season AMA

hey all -

i'm growing some vegetables in a hydro greenhouse at mcmurdo station, antarctica this winter.

before you ask, i can't grow any marijuana - there is a US marshal here who sweeps the greenhouse once a week.

ask away - but know that i may not get to answering immediately, i am not always online (no connection in the greenhouse).

http://imgur.com/a/Wm757

edited to answer many questions at once:

to apply: Raytheon Polar Services and NANA Services

brand of nutrients: general hydroponics flora gro, flora bloom and flora micro in various combinations depending on the system they are in and what is growing. i also have acid and base for adjusting the ph levels.

there is not, and will probably never be aquaponics here - it breaks antarctic treaty laws and i don't think that they'll allow it to happen for the greenhouse to just run for 6 months out of the year.

this greenhouse was built in the 1980s with parts that were due to be sent back to the US to be retrograded. this was a volunteer effort that has since become a funded position. as such, the building isn't really easy to 'fix up' or 'move things around' within. so any and all suggestions that i move systems around are great, but not possible.

i use a combination of metal halide and high pressure sodium bulbs.

as i come across more, i'll add more i guess.

thanks everyone for the great questions!