Importance of rinsing media in an ebb and flow system. I just wanted to share something. I thought I could just keep adding water and nutes to my system without a rinse or flush very often. My plant died! It wilted and keeled over. I saved a couple clones, but lost the mother. When I pulled the air stone up, it was covered in some kind of moss or growth. Everything was going great when I was using a small jug, and changing the water/nutes every day. Then I went to a large bucket, and just added when the level got low. On the third week of that, momma died suddenly, went from thriving to wilted overnight. So, lesson learned, it is extremely important to flush, rinse and change water/nutes at least every other week. Hope no one else has to learn this lesson the hard way like I did. Plain laziness cost me a huge plant. The others right beside it that are in 50/50 soil/coco never missed a beat. They get everything exactly the same as the one I had in an ebb and flow hydro system, except for they get watered/fed every 3 days, because of the soil.