2 plants have begun "wilting"

[MowMan]

Hello Ron,

First thanks for this site, After doing much "lurking" I decided to build the 11 plant system, and the thing has worked wonderfully..

The plants are in day 24 of vegetative growth and have looked perfect.... until I noticed last night that 2 plants have begun "wilting" new fan leaves are "drooping". this is occurring on new growth and there has been absolutely no change in color, i.e. there are still deep green, I have searched all of the grow guides and message boards on the net and have not been able to find any causes, I have heard that "Under watering" may be the culprit, but I water 6 times a day for 10 mins and the other 9 plants look perfect.... Here is my system.. once again thanks for this site Ron and this board, it has helped me a great deal..