0cean Forest(0.F.) would be 0.k. all the way through if starting with 'clones', but for seeds I would suggest a 'seed starter' type medium. O.F. may be too much nutes for seedlings. I use 'Fox Farm' Seed Starter for the 1st month then transplant into O.F.. So far 4rm my experience I personally don't like the seed starter because it's "time-released" which means that it will dish out nutes whenever it pleases and I think that's the cause of my bottom leaves dying so fast which I really don't mind too much because I know that after the 1st few 0r so, it starts to grow much healthier. But a buddy of mines once gave me a plant to take care of and I noticed that his plant bottom leaves didn't disease at all during it's 1st month b4 I killed it. I believe for a fact that it's due to his grow medium. I don't know what it was he was using but it wasn't soil and it was dry inside the medium and reason I know is because he used a clear plastic container which allowed me to see the roots as well. I will conquer this pet-peeve of mines on my near grows in the near future.