Hi Harddon,

thanks for your opinion.
I find it a bit hard to believe that it's the nutes, considering that there are 2 plants in the same pot and only 1 of them has this issue on only 1 or 2 sets of leaves. Maybe it's just a screwy plant?

I have given them nutes(canna terra vega) only once and only about 1/4 strength described on the nutes themself.

I'll likely wait with the next watering until I have induced flowering anyway, so I'll be watching the plant with care for the next few days. We'll see what happens.

Cheers,
Carisma