Sorry about the lack of updates.

Unforseen problems occured and the one in the pic died. However another quite nicely sprung up (Day 7, currently day 8) as is shown in the pic.

It looked a bit yellow at the time. I put it in the grow closet with the light quite high up. The following day it was looking a nice healthy green with another set of leaves happily appearing. I decided that the seed may have been to young to take Vitalink Grow, so I used Formulex.

Set up for the Waterfarm:

4 litres of water about 2 litres is distilled.
Ph: 6.4
Formulex about 40% of dosage (20ml).
Vitalink Silicon (quite a small dose about 30%) (5ml)
The light is about halfway up the space.

The root was already sticking out of the rockwool, and the following day it had developed hairs.
With regards to the rest of the seeds another two have been planted incase one fails again, they are quite happy in an airing cupboard just above room temp, sprayed with some water and formulex (half dose) every now and again.