Quote Originally Posted by smoothsmoke
Top leaves look very dark green, and bottom leaves dying of, and curling I would probable say nute burn...whatever volume of nute you have in your res, I would pour an extra bit of ro water in to dilute it down to like 2/3 of its original strength. And maybe even before that I would flush with 1/4 strength nutes to give it a good flushing. Good luck
I agreee. I grow hydroponic, and usaully I go 1/4 strength nutes for the first 1-2 weeks, then 1/2 strength from weeks 2-3. Slowly build up nute strength.
My first 2 grows, I used 100% stregth nutes (whatever it said on the bottle)
They looked very good at first then slowly all died off, I guess like what you are experiencing. Once i switched to 1/4 or 1/2 strength, I got great results.

Remember, when U see damage to the plants, it was probably an issue a while ago, it just takes the plant some time to show damage, then by that time, its usaully to late. General rule of thumb for me. As soon as i see something odd with my plants, I flush and drop nute strength. Almost always works for me. Hope this helps