Minor or Big problem?

I got two plants each in 5 gallon DWC buckets with 2 airstones in each one. They are 2 1/2 weeks into flowering. The buckets are usualy filled 5/8-3/4 all the time. Im using GH 3 part with Liquid Karma top offs, PH of 5.8, my light is 1000 watt HPS. I LST since very small...they are pretty pushed together so they can get well enough light. The smaller bottom leves and the leaves on the tops of some branches are curling down and folding over...like a REALLY bad droop..and the top leaves are looking real good. Temps are 75-78 lights on, 60-68 lights off. Humidity is at 50-60% . I got one big fan blowing and one small clip on fan. any help?

this could be a mag problem. but a picture of it would clear it up really quick

I dont have a camera..but i found this pic. the leaves are curled over like this http://boards.cannabis.com/attachmen...mar28_0004.jpg

lack of water? is there spotting or burn tips on yours?

I had an ice look like that. I eventually killed it since I didn't have room for all my plants anyway and it was one of the weaker ones. With all my plants getting exactly the same treatment, that was the only one that did that. Sorry, not sure what casused it though, couldn't quite figure it out. It did eventually start to perk up though, but I didn't do anything to try and fix it.

I'm pretty sure they are getting enough water..they are in a DWC bucket.

would probably cut back on the nutes a little, are you using a meter to measure your nutrients? how often do you change out your nutes and do the roots look healthy?
little more info might get more replies might even post in the hydro section.