oh i just thought of what might help with the plant's man i know how crazy this is going to soud but i haven't steered u wrong yet now have i??? ok look what u want to do is get a cup and a bottle cap next time u have to take a piss pee in the cup a little bit then fill the bottle cap about full empty the cup rinse it out and pour the cap in it and put a ratio of 20-30% water too the pee the reason so low a ratio the plant's are young DON'T give this too the sprout's yet but the WW and that mystery seed can handle it.
now the reason i'm suggesting this is because piss is high in nitrogen and has all kind's of minerals that are broken down into there simplest form. i'll try and find a few link's too back this up so u don't think i'm crazy lol but trust me man it work's.
my first grow ever i had regular old MG soil my plant's started yellowing ten time's worse then you're plants and i found out about the nitrogen content of the piss and within 3 doses my plant's were as green as a fresh christmas tree dude. now if u do decide to do this keep to that ratio i just gave u and remember only feed them every 2nd-3rd watering. within 24-48hr's after the first dose you'll see them green up man that'll prob take care of the yellowing unless it's a sulfer defenciy which i don't think it is but like i said this is my opinion and i'm not good at diagnoseing plant's. idk why noone else is helping u it seem's i'm the only person that's wathing this grow man either way dude if u can keep them alive for a month you did great in my book man i know my first few plant's that i just sprouted and put outside didn't make it past a month or two mainly cause bugs/animals but still they didn't even flower keep trying don't give up dude. oh and if u don't like the piss thing which is free try some fish emulsion it's good for both veg/flower stages.