The oyster shell is great for when you are initially mixing the soil. I would keep that for the future. I would use that Langbeinite in your next batch of soil as well.
That Seabird guano is good stuff, I certainly recommend you start using occasionally throughout flower. I can tell you that the ATF buds, the Durban Poison buds, and even the Blue Kush buds on this grow are much more dense on this grow so I am sold on the effectiveness in flower.
That Seabird guano is good stuff, I certainly recommend you start using occasionally throughout flower. I can tell you that the ATF buds, the Durban Poison buds, and even the Blue Kush buds on this grow are much more dense on this grow so I am sold on the effectiveness in flower.