Sorry sticky, forgot to answer ur question earlier, if u look at the 'six pack' photo's the 2 round pots...#1 and 3 are the soil one's the others are 5 litre water bottles, tops cut of, drainage holes drilled in bottom.
a 2 inch layer of clay beads for drainage and topped up with the perlite/vermi mix.
i grew them in a heated propagator, then put them in 3 inch peat pots still in the propagator,,then when i moved them to the final pots i cut of the bottom of the pots to help the roots grow, as they looked like they were struggling to get thru the side walls.....wont use them again!!
look at hydro roots...massive, cos they dont have to waste energy building themselves up to have the strength to push thru soil.
i didn't have time to set up a hydro as i said, but thought perlite/vermi was reasonably a close substitute, vermiculite will store fluids and is very light and perlite also absorbs moisture to a certain extent but also provides room for aeration...seems to have worked! bedtime folks zzzzz