I'm with stupidclown, I mix 2:1 ocean forest to light warrior and also add some extra perlite to help drainage. Seems to be working well for seedlings.i use the ocean forest from lil babies all the way to harvest, and have never had any burn issues with it.. i also cut it with about 30% or so with vermiculate, not that i think that does anything really for nute burn.. i just don't feed them any other nutes till they are about three or so weeks old, and then i only start with a weak solution of the ff's lineup..