well man are they a lil yellow or is that the glare from tha lights? how often do ya water and do you water with tap water if so let it set out for like 24 hours before ya water also did ya put any gravel in tha bottem of pots for good drainige are add more perlite one of tha 2 you prob can use some nutes but i would only use 1/4 of tha recomended dose and slowly up the dose over the weeks so ta dont burn ya plants as for nuts do some searching on here im sure you will find some ya like for cheap :thumbsup: