Really good now. My roots are going through the netting and going into the tubbing between the pots. The over flow problem sucks. What I have noticed is when the pump is off the res has time to fill back up higher that the flow. I got another 12 vdc power plug and 2 timers. I have a timer that only allows the fill pump to run max of 5 or 2 min 6 times a day. I have the pump in the system res cycle on and off match the fill pump times. This day 2 so far of doing that and they looking better. I also put a 7.5 air pump into the system and add a line to pump res.