I did rinse them but maybe not as much as i should, i did consider this was the problem. I just rinsed them until all the black dirt came out of them.
The place i got my nuites from sells clay balls also and theres are meant to be the best on the market and are not meant to affect ph so ill order some of those when i transfer the girls to the flower cabinet. They seem to be loving this light though
I have been using canna start for these girls which is just a very light nuit mix for little seedlings, when its used up though i may just stick to ph balanced water if it will do the trick for the first 2-3 weeks.
Thanks for the advice dude.