Help With My Plants, Yellowing On Leave

help i have some plants been giving very little nutrients, im just afraid to burn them or taste the side effects later. but look the oldest leaves turn yellow completely. but some of the newer leave are getting yellow on leave tips/around edges..... please look and adivse....it looks worse in real life, mabey under the lights it isn't as defined.they are too big to post here i've been trying so it's on hindbehind here's the link,


www.hidebehind.com - free anonymous image and movie hosting
www.hidebehind.com - free anonymous image and movie hosting

Mine have sort of done the same. I'm growing belladonna and although they arn't as big as yours the tips of the leaves have started to yellow. Ive just put it down to overwatering. Do you water them quite often?

yea i overwatered in the begining a little too. i think i added nutes when the soil had enough nutes for the veg stage. all i have to say is with flourescents they grew slow. but with hid it's amazing. and my ph, i used tap water and i just started using bottled water. i dont have a ph meter but too much ph is bad, same with too little.

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look at my pix, i just put them in bigger pots but i didn't take pix yet.