I used something called Super Natural Rock wool conditioner. The instructions said to NOT soak any longer then 20 minutes, so I did. I only have to adjust once or twice a day. It is not that bad. But I was thinking that in the time span of a week or so, it should level out and get better.

What do you guys usually use for your grow mediums? I use a Flood & drain system.

The medium I have used before is pretty messy, even after you wash and rinse and wash some more. I was picking crap out of my plant tray for 2 weeks. And cleaning it out of my res.