Quote Originally Posted by ozzyleven
Have you had any experience with the wick method? I would like to know if it works good.
Yup, I have a bit of experience. I try not to recommend something I don't have direct experience with.

Quote Originally Posted by ozzyleven
And also with six plants how large of a water resevoir do you think I would have to make?
For 4 days, I'm not sure I'd bother unless I couldn't raise the lights and cut-back on fans and heat. (but I would make sure soil was watered well before leaving)

Trial and error. A lot depends on the diameter of the string, and how much water it can transfer. You don't want to flood with an entire gallon in one day. A simple test...Fill a pail with one half gallon of water, add the wick as directed, and see how long to empty the bucket all over the floor. (or into another bucket sitting lower than the source bucket)