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Thanks again for the information guys. I have a question though... Since it is a hydro/aero setup (air stones make bubbles that rise to top AND a drip system), isn't the plant getting water from the bubbles even if I don't use the drip system?

Oh... and I'm also dealing with pH fluctuations as well, which may be apart of the problem. I use distilled water and I'm around 350 ppm. Other than today... I have had to adjust my pH down constantly. Only nutes in the water are Olivia's Solution, AN piranha, AN B-52 and a tiny bit of GH grow.

Not meaning to thread-jack myself, but it seems as if we are having similar issues. 3 seedlings, 3 clones. All were absolutely perfect until I transplanted them from a supercloner with a cfl to a hydro/aero set up with a 25ow metal hallide bulb 2 days ago. The seedlings are now 3 weeks old and...

Plants look about the same color-wise, but I have new growth on the seedlings. The clones are still struggling... I am receiving lots of conflicted information regarding the lighting. How far does this 250W metal hallide need to be away from the plants?

I am having this problem also, but with 2 week old seedlings. I happen to think it's a nitrogen overdose, but I don't know!

Thanks for the replies guys. I have since raised the mh bulb. It's about 25" away from the plants. I have flushed/diluted the ppm down to 375ish. pH is 5.5. To the gentlemen who was asking if I was guessing, my test equipment fluctuates around those numbers. I was not "guessing". The plants...

Bump... Update: Leaves have continued to yellow so I'm leaning toward nitrogen overdose. Can anyone validate this?

4 plants, 2 clones and 2 seedlings. Transplanted yesterday from aeroponic cloner with cfl to hydroponic/aeroponic resevoir under a 250w metal hallide bulb roughly 20 inches away. Every one of these plants were upright and healthy looking in the cloner. Am I being impatient? One more thing... I...