someone please help.. last night my plants were doing fine, looked pretty healthy and all but when i woke up i checked on them and the second one, which was the healthiest seems to be dying, there is discoloration on the leaves and all the leaves are starting to droop. this is my first time growing so im not sure what to do, im pretty sure they are going to die unless i can find out what is wrong with them, any help is highly appreciated, thanks.