ocean forrest= DEATH ???

hello guys, how is everyone. im just wondering if any1 could tell me how to use of without killing my baby's?? i had 3 bag seed high grade seedlings an transplanted the from some crappy soil to the OF i got an they all turn yellow an died.. why??? someone please explain if possible .. thank you in advance

ooh i forgot to say they where 1 week old

Nut burn. Plain and simple. Some of the fanboys here act like this soil is a gift from god when it's just peat moss, bark, worm castings, and bat shit. The bat guano is a little hot which is what most likely caused your plant to burn. Dilute or treat the excess piss that exists in the bat guano by flushing the soil (this also removes a lot of the nutrients), then foiler feed in three weeks or four weeks with 1/4th solution of worm castings or a similar low % nutrient.