The first two weeks I kept the same res, but I am going to start doing every week again. My last grow I did every week and I got lazy the first two weeks this time around. I'm due for a change, so I'll flush for a day and see how things are and go from there. Thanks for the advice stinky!

Oh, and my rockwool is the small 1" (I think) cubes surrounded by hydroton and I am feeding ten plants.