ya that was the last plant that it happend to all the leaves died. could this be wind burn? the two plants where the closest ones to the fan. the base of the plant the stock? was very mobile in the rockwool. i had to push the rockwool into the cub so im think its holding water really bad?
You probably had the fan on low, right? I don't think it's windburn. Probably what Zhu and TodayIsAGreenday said. Rootbound, caused by growing in a pot that's a bit too small.
waterd and they startd looking better i thought but then light turnd off .... 12-12 light should i just keep it on for a few days till they look better? wiil this mess the flowerin period up?