judging by your pics, i'd guess overwatering. mj wants to get pretty dry between
waterings so you need to learn the 'heft' test. all that means is that you need
to learn what your buckets weight feels like when they're dry and when they're
wet, then you judge when to water by how heavy the pot feels.

i'd also suggest that you try and relax, remember that marijuana is a weed so it's
pretty damned hardy. also, if you're anything like me then there will be a second
grow followed by a third and so on, i haven't bought any weed in over a year now.
once you start smokin' your own grown, you'll never want to go back.

just so you know, when i started i popped 30 seeds and killed 30 seedlings.
for my second attempt i popped 30 more seeds and managed to keep 5 of
them alive (luckily, 4 turned out to be female).

then, last year i threw down and bought some seeds from a seedbank.
so my last attempt i popped 5 Pure Power Plant seeds and 5 White Rhino seeds
(this all happened almost exactly a year ago) and all of them are still
alive and providing me with cuttings for my little DrBud style SOG.

btw, i ended up with 5 White Rhino females and 4 PPP females.
justanotherbozo Reviewed by justanotherbozo on . some seasoned help is desperately needed. troubleshooting form filled out! E-indoor E-soil, E-specific medium potting soil CSL-Soil type/brand waupaca materials SCL-Anything you have added to the soil nothing SCLR-Soil or slab runoff pH 6.8 E-Water source tap E-Source water pH 7.0 HRT-Source water EC (if hydro) Rating: 5