Day 29:
Beginning of week 5, she's officially in preflower now.
Looking at my older fan leaves, I'd say there is no additional BioGrow necessary, if you use AllMix for Autoflowers.
I just used 1ml/L for 2 weeks, which is not a lot anyway. Next grow, I'll just use the nutrients out of allmix and top with BioBloom granulate after 3-4 weeks.
Today I gave her 1.5L pH corrected water + 1,5ml Calmag
Day 31: 1.5L Water + 3ml Alg-a-mic + 2ml TopMax
Day 32: she's becoming a real monster 😍
Day 33: 1.5L Water + 2ml Alg-a-mic + 2ml TopMax + 2ml Hesi Boost