<span class="link_user">@Raffael</span>, I saw that, but if you go into history of this diary, you'd see my BPP was only 24cm tall comparatively to yours. So if my plant went from 24 to 70cm in 2 weeks, yours might go from 40cm to 120cm in the next 2 weeks as well. :D
<span class="link_user">@Raffael</span>, I broke half the root ball 3 weeks ago during re-pot job. Roots probably healed and now found their way into the nutrient rich Royalmix. That´s my only explanation.