Day 4: watered with 1,5 l water + Plant Succes Orca.
Day 7: watered with 1,5 l water + Plant Succes Orca + Plagron Alga Grow.
Having last year's plant as my only reference, I am definitely surprised: I have been a little bolder with the dosage of fertiliser and she's growing at a prodigious speed.
All magnificently.