Ocean Forest is a full Fertilised Soil. There i a whole inside, bat guano,crab-and fishmeal etc. i think its to hard for your "youngster" She got to much nutrients in the early stage and the effect you see now... it takes time that you see the whole desaster. Bat Guano is a hard stuff fish-and crabmeal got a lot nutrients.
I would say its the soil its good for a big plant but not for such a young seedling. and its related to the strain, some can handle the nutrients better than the others. I use Biobizz Lightmix, and Biobizz allmix. I fill the pot with the allmix, then i dig a hole in the middle, and fill it with lightmix. so the young seedling gets only light nutrients, and if its getting bigger , it gets the "bigger" nues from the other soil.
I would recommedn you to transplant her into a light fertilised soil. You can use the ocean forest later. THappy growing
likes 2