QUOTE="tripaholic88, post: 1058397, member: 32560"]does anyone know if im running the HIGH PPMS like i am now, do i still have to flush halfway like i did in soil to prevent salt build up in coco?[/QUOTE]
Sorta. If you have runoff every feed you shouldn't have to flush. That said..
How high? I used to feed 14-1800 I didn't flush til the end. They had loads of build up when I did heavy waterings during super model. It will build up. However, you use a lite solution in coco when flushing or a flush agent.
I now only run around 700-1100 ppm in 3 gl. 5 gl with coco (inside) tends to take longer to dry up. Which is a good thing outside.