Hi Dwonzal,
My understanding of the Terra Aquatica TriPart is that you need to use all three parts - Gro, Bloom and Micro - throughout the grow. Gro contains higher nitrogen, Bloom has higher PK, and Micro contains the secondary elements like calcium, magnesium, iron, manganese, etc. It looks to me like you have a few deficiencies which is probably caused by the lack of Gro and Micro nutrients from the set. You're only using Bloom, and then two additives. I'm sure they're all great at what they do, but you're missing two key building blocks, hence the problems.
If you can complete the set and feed the recommended dosage, I'm sure it will stop the spread and they'll recover.
Good luck!