i got a masde Maui Jewel seedling, when it arrived it had 3 leaves and all of them looked unhealthy--pale, yellow green and two of them had brown spots.

i watered it with peroxide to give it more oxygen and stuck it in the masde/drac tank. few days have gone by, and the two leaves with spots continued downhill while the spotless leaf is looking better

today i went to look at it's roots, and one of the spotted leaves fell off. i took it out of the media and saw that the one healthy leaf has one health, growing root, and the others are starting to rot

so i removed the totally dead roots, disinfected the rest with more peroxide, and repotted it in sanitized s/h medium and will keep an eye on the roots. i know the other spotted leaf is dying, so technically we are down to one leaf

i have NO experience with such small seedings, HELP ME!! how do i keep it alive??