1500 Watt HPS Ballast - best for aeroponics, hydro or soil?

I'm looking into setting up a grow room using the Master Blaster 1500w high pressure sodium ballast by Lumatek / Galaxy but I'm unsure with such massive wattage, the best way to maximize grams per watt. I'm leaning heavily towards aeroponics.

Originally, given the lumen output of a 1500w HPS bulb I was thinking of using soil in 5 gallon pots, thinking such massive lumens would be ideal for growing large plants.

Given I'm not too thrilled about the mess and tedium of soil, I also considered large pot DWC, drip system or ebb & flow.

Right now I'm leaning heavily towards the Aquamist 1 system which was featured in SeeMoreBuds DVD 15 Pounds in 80 Days. I'm thinking of using 4 of these with the 6" net pots, 16 plants per unit. Each unit is 4ft x 2ft, so four of them would be 64 plants in a 8ft x 4ft footprint under two 1500w HPS for flowering. I know the added heat can defeat the purpose of the 1500w bulb by forcing one to increase the distance between the light and plants. I don't mind the heat issue: if air cooling is not sufficient (will be using Magnum XXXL 8") I can install an Ice Box or the new Ice Flow from Advanced Nutrients. In fact, given how hot these run I may do the Ice Box and chiller from day one so I can really get them close to the canopy.

Any advice is much appreciated!

You should check out the current culture h20 systems, or at least an easily copied DIY system.

It seems to be really popular and produce most excellent results. Going to be giving it a whirl myself and I'm very hopeful.

http://www.cch2o.com/

cch20 setup up is really easy to use, and it is showing me some great results at the moment.
make sure to clean your hydroton pebbles a lot, i would say 48 hours in a flood to drain system,
what happens if u dont clean it is you will get a ton of this redorange build up and your air pump will start wistling extremely loud to where your neighbors will hear it lol...
all you got to do to clean this off if it happens is pull the air stones out, whip down the vinyl air tubing, and let the air blow throught for about an hour...

lol...

back to the p smurf, a 1500w light will definately decrease your gram per watt ratio, 600w lights are the most efficient, after that the ration decreases.

I will expieriment with the 1500w in the future probably within the next six months, but it will be a vertical flooded tube setup.

Keep in mind that this light only operates on 240volt. dispite what amazon says.. scam artists.

How do you like the cch20 system. which system did you buy. are you using a chiller ?

are you using the cch20 system. if so which set did you buy.