Concerning the Algamic, I love the stuff especially alongside Fishmix. But about 2 - 2 1/2 years ago after intensive research into the biobizz matter, I came across a research on phytohormones (contained in sea weed) and what it does to a plant in flowering. The study showed that plant fed with Alga product during flowering will develop a lot more small leaves inside the buds than if it wasn't, those small leaves taking energy from the flower development.
So I did my own tests and eventually agreed after a few comparisons that the amount of leaves inside the buds were relatively reduced but also that the buds were fuller/more compact.
Since I basically use it for the first 3 weeks and stop at the same time I start bloom about 10 days after sex (day 34ish) 2ml - 2.5ml@1L max. Once the stretch is complete I would give a boost feed as I call it with 1-2ml Algamic , and 1-2ml of Roots stimulator and start feeding has would normally using BioGrow - BioHeaven - BioBloom.
from my personal research.