I just got done changing my water and I have it set about 1/2 above the bottom of my net pots.
I am at day 10, I had a couple of bad days. My cfl's that I ordered for vegging didn't arive in time so I put my seedlings under a 400w HPS. Not realizing it my water got up to 98 F and really pissed my babies off. I lost two of them and now on a few of the others the have shriveled and weak stems.
Roseman, I have read your entire tutorial, but I am realizing it still take a lot of trial and error.