Critical mass autos

I have used Fox Farm Ocean Forest for years and have never had a problem with "too much". Depending on the strain I start providing additional nutrients as early as node 3 (about the age of your plant). At that stage they usually need a bit more nitrogen but only a small amount. Whatever the recommendations on the package of your nutrients use 1/4 to 1/2. Going from your diary I have no idea what you are talking about "Topped it when I seen it was over watered." Over watering is never a reason to top a plant. You need to be especially careful with auto's. They are on a fixed schedule and will flower and finish regardless so it is often best to not do anything that stresses the plant. With a photo period plant you can veg longer to recover from watering mistakes, topping & pruning. With an auto you sometimes want to keep as much plant as possible. More leaves collecting photons and more roots collecting nutrients to make tasty buds.