hey bro i agree with rof the roots look like they r getting root rot but ther something wrong going on there i have done hydro and my boys all do hydro and ur roots are suppose to be white and fuzzy i think u just need to clean ur container once a week to keep a good healthy roots also it looks like algea is growin in there to make sure ur container is cover in black dont mean to offend u or anything just offering some help if it is any to u bro anyway the plant look good i imagine u get at least 4 zips any way good luck bro