hey sjacobs,

thanks for input. Interestingly, the distance between the nodes has decreased by alot since I took them under the CFL(from the balcony). It's about 1cm and I'm even unable to top it without cutting other leaves. Some of the leaves appear to have only little space to come out there.. maybe I shoult put the light a bit higher, it's about 4 -6cm above the top.

The soil is http://www.ricoter.ch/de/sortiment/Z...e.php?navid=38 (german, sorry)

Let's try to translate: PH 6.5, steamed to prevent infestion of fungus gnats with new soil, contains peat, bark compost, lime, base mineral fertilizer and wood fibre

Cheers,
Carisma